SEL-700G Family of Generator and Intertie Protection Relays
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Schweitzer Engineering Laboratories, Inc. SEL-700G Data Sheet
New Features➤ Disconnect control from the Bay Screens application.
➤ Three-position disconnects for increased safety.
➤ A built-in web server that simplifies access to relay data and supports firmware upgrade.
➤ Faster firmware downloads via the Ethernet port.
➤ IEEE 1588-2008 firmware-based Precision Time Protocol (PTP) provides ease of integration.
➤ EtherNet/IP provides ease of integration for industrial automation applications.
➤ Support for IEC 61850 standard operating modes such as Test, Blocked, Test/Blocked, On, and Off for ease ofcommissioning.
➤ Visualization of system parameters and synchronization of your generator to your system with built-in Synchroscope/Auto Synchronizer applications on the touchscreen display.
Basic to Comprehensive Protection
Intertie Protection
Basic Dual-Feeder Overcurrent Protection
SEL-700G0, SEL-700G1 SEL-700GT SEL-700GW Small , Medium, and
Large Generators Intert ie and Generator Wind Generator
SEL-700G Family of Generator and Intertie Protection Relays
SEL-700G Data Sheet Schweitzer Engineering Laboratories, Inc.
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Major Features and BenefitsThe SEL-700G family of protection relays provides unsurpassed protection, integration, and control features in aflexible, compact, and cost-effective package.
➤ Basic Generator Protection Features (SEL-700G0): Ground differential; sensitive restricted earth fault;thermal overload; phase, negative-sequence, residual-ground, and neutral-ground overcurrent elements forbackup; residual-ground and neutral-ground time-overcurrent elements; directional residual-ground and neutral-ground overcurrent elements; current unbalance element; voltage-controlled, voltage-restrained time-overcurrentelement for backup protection; breaker failure protection for three-pole breaker; under- and overvoltageelements; inverse-time over- and undervoltage elements; loss-of-potential element; volts/hertz or overexcitationprotection; directional power elements; loss-of-field; over- and underfrequency protection elements; off-frequency time accumulators; rate-of-change-of- frequency elements; vector shift elements for islanding detec-tion; inadvertent energization protection; RTD protection (requires internal or external SEL-2600 RTD option);field ground using an SEL-2664 Field Ground Module.
➤ Optional Generator Protection Features (SEL-700G0+, SEL-700G1, SEL-700G1+): Generator synchronism-check elements; synchronism-check under- and overvoltage elements; inverse-time over- and undervoltageelements; autosynchronism; synchroscope; backup compensator distance elements; out-of-step elements; vectorshift elements for islanding detection; 100% stator ground protection elements; and dual-slope current differen-tial protection with harmonic blocking and restraint elements to provide sensitive and secure protection. Thehigh-security mode provides additional security against CT saturation during external events including externaltransformer energization, external faults, etc.
➤ Intertie Protection Features (SEL-700GT): Phase, negative-sequence, and residual-ground overcurrentelements for overcurrent, time-overcurrent, and directional overcurrent protection; breaker failure protection forthree-pole breaker; under- and overvoltage elements; inverse-time over- and undervoltage elements; loss-of-potential element; directional power elements; over- and underfrequency protection elements; rate-of-change-of-frequency elements; vector shift elements for islanding detection; tie synchronism-check elements; synchroscope; andRTD protection (requires internal or external SEL-2600 RTD option).
➤ Optional Intertie Protection Features (SEL-700GT+). Addition of basic generator protection features, asshown above for the SEL-700G0, to create intertie and generator protection. The relay also includes generatorsynchronism-check, synchroscope, and autosynchronism functions.
➤ Wind Generator Protection Features (SEL-700GW). The SEL-700GW is configured with two sets of phase,negative-sequence, and residual-ground overcurrent elements, and phase, negative-sequence, and residual-groundtime-overcurrent elements to provide dual-feeder protection in a multiple wind generator network application. The relayalso includes three-pole breaker failure protection for two breakers.
➤ Generator Monitoring. Monitor ambient and generator winding temperature using optional analog inputs orRTDs and protect the generator from thermal damage. Use off-frequency time accumulators and protect steamturbine blades from fatigue failures because of off-frequency vibration.
➤ Operator Controls. Eight programmable front-panel pushbuttons each with two programmable tricolor LEDsallow for a wide variety of uses, including easy trip and close control and status indications for a breaker. Imple-ment local and remote operator control schemes using 32 local and 32 remote control bits.
➤ Integrated Web Server. Log in to the built-in web server to view metering and monitoring data and to downloadevents, Sequential Events Recorder (SER), etc. Use the web server to view relay settings and to perform relayfirmware upgrades.
➤ Relay and Logic Settings Software. ACSELERATOR QuickSet® SEL-5030 Software reduces engineering costsfor relay settings and logic programming. The tools in QuickSet make it easy to develop SELOGIC® control equa-tions. Use the built-in phasor display to verify proper CT polarity and phasing. Use the synchroscope to watchthe autosynchronism controls.
➤ Metering and Reporting. Built-in metering functions eliminate separately mounted metering devices. AnalyzeSequential Events Recorder (SER) reports and oscillographic event reports for rapid commissioning, testing, andpost-fault diagnostics. Unsolicited SER protocol allows station-wide collection of binary SER messages.
➤ Front-Panel HMI. Navigate the relay HMI using a 2 x 16-character LCD or optional 5-inch, color, 800 x 480-pixel touchscreen display.
Schweitzer Engineering Laboratories, Inc. SEL-700G Data Sheet
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➤ Additional Standard Features. Includes Modbus® RTU, Event Messenger support, MIRRORED BITS® commu-nications, built-in web server and communications, load profile report, 128 remote analogs, support for12 external RTDs (SEL-2600 module), IRIG-B input, advanced SELOGIC, configurable labels, IEEE C37.118-compliant synchrophasor protocol, and fiber-optic serial port.
➤ Optional Features. Select from a wide offering of optional features, including SNTP (Simple Network TimeProtocol), IEEE 1588-2008 firmware-based PTP, IEC 61850 Edition 2, Modbus® TCP/IP, EtherNet/IP, DNP3LAN/WAN, DNP3 serial, IEC 60870-5-103, PRP with dual Ethernet ports, 10 internal RTDs, voltage/currentinputs, additional EIA-232 or EIA-485 communications ports, and single or dual, copper wire or fiber-opticEthernet ports. Several analog and digital I/O options are available. These include 4 AI/4 AO, 4 DI/4 DO, 8 DI,8 DO, 3 DI/4 DO/1 AO, 4 DI/3 DO, and 14 DI. Conformal coating for chemically harsh and/or high-moistureenvironments is available as an option.
➤ Language Support. Choose English or Spanish for your serial ports, including the front-panel serial port. Thestandard relay front-panel overlay is in English; a Spanish overlay is available as an ordering option.
Intertie Standards and Compliance
The SEL-700GT Intertie Protection Relay provides comprehensive multifunctionprotection, control, and monitoring for intertie applications as well as intertiegenerator applications. The SEL-700GT Relay capabilities meet or exceed theprotection and control requirements specified in the ANSI/IEEE Std 1547-2018,Standard for Interconnecting Distributed Resources with Electric Power Systems.
SEL-700G Data Sheet Schweitzer Engineering Laboratories, Inc.
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Functional Overview
• Sequential Events Recorder• Event Reports• Web Server• SEL ASCII, Ethernet*, Modbus TCP*, SNTP*,
IEEE 1588-2008 firmware-based PTP*, IEC 61850*, IEC 60870-5-103*, EtherNet/IP, PRP*, DNP3 LAN/WAN*, DNP3 Serial*, Modbus RTU, Telnet*, FTP*, PTP*, and DeviceNetTM Communications*
• Eight Front-Panel Target LEDs, Six of Which Are Programmable
• Two Inputs and Three Outputs Standard• I/O Expansion*—Additional Contact Inputs,
Contact Outputs, Analog Inputs, Analog Outputs, and RTD Inputs
• Single or Dual Ethernet Copper or Fiber-Optic Communications Port*
• Battery-Backed Clock, IRIG-B Time Synchronization
• Instantaneous Metering, Demand Metering• Eight Programmable Pushbuttons Each With
Two Tricolor LEDs• Off-Frequency Operation Time Accumulators• Advanced SELOGIC Control Equations• 32 Programmable Display Messages• MIRRORED BITS Communications• Synchrophasor (IEEE C37.118)• Breaker Wear Monitor• Event Messenger Compatible• Front-Panel HMI With 2 x 16-Character LCD or
Optional 5-Inch, Color, 800 x 480-Pixel Touchscreen Display
*Optional
Figure 1 SEL-700G0, SEL-700G1 Generator Protection Relay
Overvoltage Undervoltage
Volts-Per-
Hertz
Field Ground
GeneratorSynchronismCheck andAutosynchronizer
Undervoltage
Overvoltage• Phase• Ground• Neg. Seq.
Overcurrent• Phase• Ground• Neg. Seq.
Overcurrent• Phase• Ground• Neg. Seq.
Distance Voltage Restrained/Controlled
Time-Overcurrent
RTD Thermal
ThermalModel
DirectionalPower
Out-of-Step
Loss-of-Field
DirectionalGroundCurrent
Neg.-Seq.Overcurrent
BreakerFailure
Ground Time-Overcurrent
NeutralOvervoltage
NeutralOvercurrent
Neutral Time-Overcurrent
RestrictedEarth Fault
Neutral CurrentDifferential
IAY, IBY, ICY*
VS*
VAX, VBX, VCX
IAX, IBX, ICX
IN
VN*
Frequency• Over• Under• Rate
SEL-2664
SEL-2600
SEL-700G0, 700G1 Generator Protection Relay
IN
CBCT
(Alternate IN)Inverse-Time
OvervoltageInverse-Time Undervoltage
Loss-of-Potential
CurrentDifferential
Vector Shift
100 PercentStator Ground
78VS
Schweitzer Engineering Laboratories, Inc. SEL-700G Data Sheet
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• Sequential Events Recorder• Event Reports• Web Server• SEL ASCII, Ethernet*, Modbus TCP*, SNTP*,
IEEE 1588 firmware-based PTP* IEC 61850*, IEC 60870-5-103*, EtherNet/IP, PRP*, DNP3 LAN/WAN*, DNP3 Serial*, Modbus RTU, Telnet*, FTP*, PTP*, and DeviceNet Communications*
• Eight Front-Panel Target LEDs, Six of Which Are Programmable
• Two Inputs and Three Outputs Standard• I/O Expansion*—Additional Contact Inputs,
Contact Outputs, Analog Inputs, Analog Outputs, and RTD Inputs
• Single or Dual Ethernet Copper or Fiber-Optic Communications Port*
• Battery-Backed Clock, IRIG-B Time Synchronization
• Instantaneous Metering, Demand Metering• Eight Programmable Pushbuttons Each With
Two Tricolor LEDs• Off-Frequency Operation Time Accumulators• Advanced SELOGIC Control Equations• 32 Programmable Display Messages• MIRRORED BITS Communications• Synchrophasor (IEEE C37.118)• Breaker Wear Monitor• Event Messenger Compatible• Front-Panel HMI With 2 x 16-Character LCD or
Optional 5-Inch, Color, 800 x 480-Pixel Touchscreen Display
*Optional
Figure 2 SEL-700GT Intertie and Generator Protection Relay
SEL-700GT Intertie and Generator Protection Relay
52 X
Overvoltage Undervoltage
GeneratorSynchronism
Check andAutosynchronizer
Undervoltage Overvoltage• Phase• Ground• Neg. Seq.
Frequency• Over• Under• Rate
Overcurrent• Phase• Ground• Neg. Seq.
NeutralOvercurrent
Neutral Time-Overcurrent
RestrictedEarth Fault
Neutral CurrentDifferential
IAY, IBY, ICY
VS
VAX, VBX, VCX*
IN
Loss-of-Potential
DirectionalPower
Time-Overcurrent• Phase• Ground• Neg. Seq.
DirectionalOvercurrent• Phase• Ground• Neg. Seq.
Overvoltage• Phase• Ground• Neg. Seq.
Undervoltage
Load
VAY, VBY, VCY
52 Y
Volts-Per-Hertz
Frequency• Over• Under• Rate
Overcurrent• Phase• Ground• Neg. Seq.
Voltage Restrained/Controlled
Time-Overcurrent
ThermalModel
DirectionalPower
Loss-of-Field
DirectionalGroundCurrent
BreakerFailure
IAX, IBX, ICX*
Neg. Seq.Overcurrent
Ground Time-
Overcurrent
Loss-of-Potential
Field GroundSEL-2664
SEL-2600 RTD Thermal
CBCT
(Alternate IN)
Inverse-TimeUndervoltage
Inverse-TimeOvervoltage
VectorShift
78VS
Tie Synchronism Check
a a
a The SEL-700GT+ model allows you to choose X-side or Y-side voltages for the 27I and 59I time-inverse elements
SEL-700G Data Sheet Schweitzer Engineering Laboratories, Inc.
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• Sequential Events Recorder• Event Reports• Web Server• SEL ASCII, Ethernet*, Modbus TCP*, SNTP*,
IEEE 1588-2008 firmware-based PTP*, IEC 61850*, IEC 60870-5-103*, EtherNet/IP, PRP*, DNP3 LAN/WAN*, DNP3 Serial*, Modbus RTU, Telnet*, FTP*, PTP*, and DeviceNet Communications*
• Eight Front-Panel Target LEDs, Six of Which Are Programmable
• Two Inputs and Three Outputs Standard• I/O Expansion*—Additional Contact Inputs,
Contact Outputs, Analog Inputs, Analog Outputs, and RTD Inputs
• Single or Dual Ethernet Copper or Fiber-Optic Communications Port*
• Battery-Backed Clock, IRIG-B Time Synchronization
• Instantaneous Metering, Demand Metering• Eight Programmable Pushbuttons Each With
Two Tricolor LEDs• Off-Frequency Operation Time Accumulators• Advanced SELOGIC Control Equations• 32 Programmable Display Messages• MIRRORED BITS Communications• Synchrophasor (IEEE C37.118)• Breaker Wear Monitor• Event Messenger Compatible• Front-Panel HMI With 2 x 16-Character LCD or
Optional 5-Inch, Color, 800 x 480-Pixel Touchscreen Display
*Optional
Figure 3 SEL-700GW Wind Generator Protection Relay
Overcurrent• Phase• Ground• Neg. Seq.
Time-Overcurrent• Phase• Ground• Neg. Seq.
SEL-700GW Wind Generator Protection Relay
IAX, IBX, ICX
IAY, IBY, ICY
BreakerFailure
Field Ground
RTD Thermal
SEL-2664
SEL-2600
Schweitzer Engineering Laboratories, Inc. SEL-700G Data Sheet
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Protection Features AC Analog InputsThe SEL-700G has between 6 and 14 analog inputs,depending on the model and options selected. All analoginputs are recorded for event reporting and oscillography.
Table 1 shows the current and voltage inputs for thedifferent models available. Current inputs are 1 A or 5 Anominal rating and voltage inputs are 300 V continuousrating.
The SEL-700G offers an extensive variety of protection features, depending on the model and options selected. Table 2shows the protection features available in the different models.
Table 1 Current (ACI) and Voltage (AVI) Card Selection for SEL-700G Models
Model DescriptionSlot Z Card (MOT Digits) Slot Z Inputs
Slot E Card (MOT Digits) Slot E Inputs
700G0 Basic generator protection 4 ACI/3 AVI (81, 82, 85, 86)
IAX, IBX, ICX, IN, VAX, VBX, VCX
(OX)
700G0+ Basic generator protection plus (see Table 2 for additional protection elements)
4 ACI/3 AVI (81, 82, 85, 86)
IAX, IBX, ICX, IN, VAX, VBX, VCX
2 AVI (74) VS, VN
700G1 Full generator protection 4 ACI/3 AVI (81, 82, 85, 86)
IAX, IBX, ICX, IN, VAX, VBX, VCX
3 ACIE(73, 77)
IAY, IBY, ICY
700G1+ Full generator protection plus (see Table 2 for additional protection elements)
4 ACI/3 AVI (81, 82, 85, 86)
IAX, IBX, ICX, IN, VAX, VBX, VCX
3 ACI/2 AVI (72, 76)
IAY, IBY, ICY, VS, VN
700GT Intertie protection 1 ACI (84, 88) IN 3 ACI/4 AVI (71, 75)
IAY, IBY, ICY, VS, VAY, VBY, VCY
700GT+ Intertie and generator protection 4 ACI/3 AVI (81, 82, 85, 86)
IAX, IBX, ICX, IN, VAX, VBX, VCX
3 ACI/4 AV (71, 75)
IAY, IBY, ICY, VS, VAY, VBY, VCY
700GW Basic wind generator protection 3 ACIZ (83, 87) IAX, IBX, ICX 3 ACIE (73, 77) IAY, IBY, ICY
Table 2 SEL-700G Protection Elements (Sheet 1 of 3)
Protection Elements
Basic Generator Protection
Basic With
Intertie Protection
Intertie and Generator Protection
Wind Generator Protection
21C, 25, 64G, 78
21C, 78, 87
21C, 25, 64G, 78, 87
700G0 700G0+ 700G1 700G1+ 700GT 700GT+ 700GW
87 Phase Differential X X
87N Ground Differential X X X X X
REF Restricted Earth Fault X X X X X
64G 100% Stator Ground X X
64F Field Ground X X X X X X
40 Loss of Field X X X X X
49T Thermal Overload X X X X X
49RTD RTDs X X X X X X X
46 Current Unbalance X X X X X
24 Volts/Hz X X X X X
78 Out of Step X X X
78VS Vector Shift X X X X X X
INAD Inadvertent Energization X X X X X
21C Compensator Distance X X X
51C Voltage-Controlled TOC X X X X X
51V Voltage-Restrained TOC X X X X X
51PX Phase Time-Overcurrent X
SEL-700G Data Sheet Schweitzer Engineering Laboratories, Inc.
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51PY Phase Time-Overcurrent Xa Xa X
51QX Neg.-Seq. Time-Overcurrent X
51QY Neg.-Seq. Time-Overcurrent Xa Xa X
51GX Ground Time-Overcurrent Xa Xa Xa Xa Xa X
51GY Ground Time-Overcurrent Xa Xa X
51N Neutral Time-Overcurrent Xa Xa Xa Xa X Xa
50PX Phase Overcurrent X X X X X X
50PY Phase Overcurrent X X X X X
67PY Directional Phase Overcurrent X X
50QX Neg.-Seq. Overcurrent X X X X X X
50QY Neg.-Seq. Overcurrent X X X X X
67QY Directional Neg.-Seq. Overcurrent X X
50GX Ground Overcurrent X X X X X X
67GX Directional Ground Overcurrent X X X X X
50GY Ground Overcurrent X X X X X
67GY Directional Ground Overcurrent X X
50N Neutral Overcurrent Xb Xb Xb Xb X Xb
67N Directional Neutral Overcurrent X X X X X
27X Undervoltage X X X X X
27Y Undervoltage X X
27S Synchronism Undervoltage X X X X
27I Inverse-Time Undervoltagec X X X X X X
59X Overvoltage (P, Q, G) X X X X X
59Y Overvoltage (P, Q, G) X X
59S Synchronism Overvoltage X X X X
59I Inverse-Time Overvoltaged X X X X X X
32X Directional Power X X X X X
32Y Directional Power X X
81X Over/Underfrequency X X X X X
81Y Over/Underfrequency X X
81RX Rate-of-Change of Frequency X X X X X
81RY Rate-of-Change of Frequency X X
BFX Breaker Failure X X X X X X
BFY Breaker Failure X X X
60LOPX Loss of Potential X X X X X
60LOPY Loss of Potential X X
25 GEN Synchronism Check X X X
25 TIE Synchronism Check X X
Table 2 SEL-700G Protection Elements (Sheet 2 of 3)
Protection Elements
Basic Generator Protection
Basic With
Intertie Protection
Intertie and Generator Protection
Wind Generator Protection
21C, 25, 64G, 78
21C, 78, 87
21C, 25, 64G, 78, 87
700G0 700G0+ 700G1 700G1+ 700GT 700GT+ 700GW
Schweitzer Engineering Laboratories, Inc. SEL-700G Data Sheet
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Overcurrent ProtectionThe SEL-700G provides complete overcurrent protectionwith as many as two sets of three-phase CTs and oneneutral CT input. Phase overcurrent protection isprovided for both three-phase inputs. The followingovercurrent elements are provided.
Instantaneous Overcurrent Elements The following instantaneous overcurrent elements areprovided in the SEL-700G as shown in Table 2. Allinstantaneous overcurrent elements provide torquecontrol and definite-time delay settings.
➤ As many as six instantaneous phase overcurrentelements (50P) with peak detection algorithms toenhance element sensitivity during high-fault currentconditions where severe CT saturation may occur.
➤ As many as four instantaneous negative-sequenceovercurrent (50Q) elements.
➤ As many as four residual-ground instantaneous over-current (50G) elements. These elements use calcu-lated residual (3I0) current levels.
➤ As many as two neutral instantaneous overcurrentelements (50N).
Directional Instantaneous Overcurrent ElementsThe following directional overcurrent elements areavailable in the SEL-700G with directional control (seeTable 2).
➤ As many as three directional phase overcurrentelements (67P).
➤ As many as two directional negative-sequence over-current elements (67Q).
➤ As many as four directional residual-ground overcur-rent elements (67G).
➤ As many as two directional neutral-ground overcur-rent elements (67N).
Time-Overcurrent ElementsThe SEL-700G provides the time-overcurrent elementslisted in Table 2. These time-overcurrent elementssupport the IEC and US (IEEE) time-overcurrentcharacteristics. Electromechanical disc reset capabilitiesare provided for all time-overcurrent elements.
➤ As many as two phase time-overcurrent (51P)elements are provided. These phase elements operateon the maximum of phase currents. One 51P elementhas directional control.
➤ As many as two negative-sequence time-overcurrent(51Q) elements are provided. These elements operateon the calculated negative-sequence current for eachset of three-phase inputs. One 51Q element has direc-tional control.
➤ As many as two residual time-overcurrent (51G) ele-ments are provided. These elements use calculatedresidual (3I0) current levels. Both 51G elements havedirectional control.
➤ One neutral time-overcurrent (51N) element isprovided with directional control.
Differential Protection (87) When specified, the SEL-700G detects stator faults usinga secure, sensitive current differential function. Thisfunction has a sensitive percentage-restrained differentialelement and an unrestrained element. The differentialfunction provides the unique capability of power trans-former and CT connection compensation. This allowsyou to conveniently include the unit step-up transformerin the generator differential zone using wye-connectedCTs for both input sets. The relay allows you to chooseharmonic blocking, harmonic restraint, or both,providing a reliable differential protection during trans-former inrush conditions. Even-numbered harmonics(second and fourth) provide security during energization,while fifth harmonic blocking provides security for over-excitation conditions. Set second-, fourth-, and fifth-harmonic thresholds independently. The dual-slopepercentage restraint characteristic improves element
Autosynchronizer X X X
Off-Frequency Accumulators X X X X Xa These inverse time-overcurrent elements have directional control.b The 50N element uses the 67NnP and 67NnT Relay Word bits for the SEL-700G0, SEL-700G0+, SEL-700G1, SEL-700G1+, and SEL-700GT+
models.c Two elements are available (select X- and/or Y-side phase, phase-to-phase, positive sequence, or synchronism voltage VS, depending on the part
number).d Two elements are available (select X- and/or Y-side phase, phase-to-phase, residual, positive sequence, negative sequence, neutral voltage VN, or
synchronism voltage VS, depending on the part number).
Table 2 SEL-700G Protection Elements (Sheet 3 of 3)
Protection Elements
Basic Generator Protection
Basic With
Intertie Protection
Intertie and Generator Protection
Wind Generator Protection
21C, 25, 64G, 78
21C, 78, 87
21C, 25, 64G, 78, 87
700G0 700G0+ 700G1 700G1+ 700GT 700GT+ 700GW
SEL-700G Data Sheet Schweitzer Engineering Laboratories, Inc.
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security for through-fault conditions. The high-securitymode provides additional security against CT saturationduring external events including external transformerenergization, external faults, etc.
Restricted Earth Fault (REF) Protection Apply the REF protection feature for sensitive detectionof internal ground faults on grounded wye-connectedwindings. The neutral current CT provides the operatingcurrent. Polarizing current is derived from the residualcurrent calculated for the protected winding. A sensitivedirectional element determines whether the fault isinternal or external. Zero-sequence current thresholdsand selectable CT saturation logic supervise tripping.
Ground Differential Protection (87N) SEL-700G relays with generator protection are equippedwith a ground differential function that provides selectiveground fault detection for solidly grounded and low-impedance grounded generators. This function helpsprotect generators on multimachine buses, because theelement does not respond to ground faults on the parallelgenerators.
Generator Synchronism Check (25G)You can specify the SEL-700G with a built-in generatorsynchronism-check function (25G). The synchronism-check function is extremely accurate and provides super-vision for acceptable voltage window and maximumpercentage difference, maximum and minimum allow-able slip frequency, target closing angle, and breakerclosing delay. The synchronism-check report givescomplete information on the three latest paralleling oper-ations, including the generator and system voltages andfrequencies, slip frequency, and phase angle when theclose was initiated. The relay also keeps a runningaverage of the breaker close time.
Intertie Synchronism Check (25T) The intertie model of the SEL-700G has the tie synchro-nism-check function (25T), which provides the closingwindow for the bus-tie breaker when connecting to theutility system.
Autosynchronizer and SynchroscopeSelected SEL-700G models have the built-in autosyn-chronizer function, which provides output contact inter-faces for the generator field voltage regulator and theprime mover speed control governor. Frequency, voltage,and phase are automatically synchronized and the gener-ator is connected to the power system with this function.The relay also provides generator autosynchronismreports to record the automatic synchronizing event. The
generator synchronization process can be viewed on aPC-based synchroscope (see example in Figure 4) withQuickSet.
Figure 4 QuickSet Synchroscope
Relays equipped with the touchscreen display come witha built-in Synchroscope application in the Monitorfolder, which displays a graphical representation of thephasor difference between the bus and the generator ortie. You can also use the Auto Synchronizationapplication in the Control folder to initiate auto-synchronization of your generator and your system.
100 Percent Stator Ground Detection (64G) The SEL-700G detects stator ground faults on high-impedance grounded generators using a conventionalneutral-overvoltage element and a third-harmonicvoltage differential detection scheme for 100 percentstator winding coverage. The neutral overvoltageelement detects winding ground faults in approximately85 percent of the winding. Faults closer to the generatorneutral do not result in high neutral voltage but aredetected using third harmonic neutral and terminal volt-ages. The combination of the two measuring methodsprovides ground fault protection for the full winding.
Use the SEL-2664S Stator Ground Protection Relay for100 percent stator ground protection using a multisinesignal injection method for a superior solution that isindependent of third-harmonic voltage magnitude. Thisrelay works with the generator in or out of service andduring generator ramp up without any blind spots.
Field Ground Protection (64F)The SEL-700G, with the SEL-2664 Field GroundModule, detects field ground faults by measuring fieldinsulation-to-ground resistance using the switched dcvoltage injection method. Two-level protection for alarmand trip functions is provided.
Schweitzer Engineering Laboratories, Inc. SEL-700G Data Sheet
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Directional Power Detection (32)Sensitive directional power elements in the SEL-700Gprovide antimotoring and/or low forward power tripping.As many as eight elements (four each for the X side andY side) for detecting real (Watts) or reactive (VARS)directional power flows, having independent time-delaysand sensitivities are provided. Directly trip the generatorunder loss-of-prime mover conditions to prevent primemovers from motoring, or use low forward power indica-tion as a tripping interlock when an orderly shutdown isrequired.
Over-Excitation Protection (24) The SEL-700G provides one definite-time for alarm andone composite inverse-time volts/hertz element. Thecomposite inverse-time characteristic may be enabledwith a two-step definite-time characteristic, a definite/inverse-time characteristic, or a simple inverse-timecharacteristic. A custom curve option is also available.
Loss-of-Field Protection (40) Two offset positive-sequence mho elements detectloss-of-field conditions. Settable time-delays help rejectpower swings that pass through the machine impedancecharacteristic. By using the included directional supervi-sion, one of the mho elements can be set to coordinatewith the generator minimum excitation limiter and itssteady-state stability limit.
Out-of-Step Protection (78) SEL-700G relays use a single or a double-blinderscheme, depending on user selection, to detect an out-of-step condition. In addition to the blinders, the schemeuses a mho circle that restricts the coverage of the out-of-step function to the desired extent. Furthermore, bothschemes contain current supervision and torque controlto supervise the operation of the out-of-step element.
Negative-Sequence Overcurrent Protection (46)Negative-sequence current heats the rotor at a higher ratethan positive-sequence or ground current. The negative-sequence definite-time element provides alarm for earlystages of an unbalanced condition. The inverse time-overcurrent element provides tripping for sustainedunbalance conditions to prevent machine damage.The inverse-time negative-sequence element providesindustry standard (I2)2 • t protection curves.
System Backup Protection (21C, 51V, 51C)The SEL-700G offers you the choice of three methodsfor performing system backup protection. Compensator
distance elements (21C), a voltage-restrained phase time-overcurrent element (51V), and a voltage-controlledphase time-overcurrent (51C) element are all available;you simply enable the element you wish to use.
Over- and Undervoltage Protection (27, 59)Phase, phase-to-phase, and positive-sequence under-voltage (27), overvoltage (59), residual overvoltage(59G) and negative-sequence overvoltage (59Q)elements help you create protection and control schemes,such as undervoltage load shedding, or standby genera-tion start/stop commands.
➤ Phase and phase-to-phase undervoltage elementsoperate with the minimum of the measured voltagemagnitudes; these elements operate when any singlemeasurement falls below the set thresholds.
➤ Phase and phase-to-phase overvoltage elementsoperate with the maximum of the measured voltagemagnitudes.
➤ The positive-sequence undervoltage elements operatewhen the calculated positive-sequence voltage V1drops below the set thresholds.
➤ The positive-sequence overvoltage elements operatewhen the calculated positive-sequence voltage V1exceeds the set thresholds.
➤ The negative-sequence overvoltage elements operatewhen the calculated negative-sequence voltage V2exceeds set thresholds.
➤ The residual-ground voltage element operates whenthe zero-sequence voltage 3V0 exceeds the set point.
➤ Inverse-time overvoltage (59I) and inverse-timeundervoltage (27I) elements that operate on themeasure phase-to-neutral voltages, phase-to-phasevoltages, or VS channel voltage, depending on therelay part number.
All voltage elements provide definite-time delaysettings.
Loss-of-Potential Logic (60LOP) Relay functions that use phase voltages or symmetricalcomponent voltages rely on valid inputs to make thecorrect decisions. The LOP logic detects open voltagetransformer fuses or other conditions that cause a loss ofrelay secondary voltage input. The SEL-700G withvoltage inputs, includes loss-of-potential logic thatdetects one, two, or three potentially blown fuses. Thispatented logic is unique and is universally applicable. Italso offers a SELOGIC setting to block the LOP logicunder user-defined conditions. The LOP feature allowsfor the blocking of protection elements to add securityduring fuse failure.
SEL-700G Data Sheet Schweitzer Engineering Laboratories, Inc.
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Breaker Failure Protection (BF) The SEL-700G offers breaker failure protection for up totwo three-pole breakers. Use the breaker failure detectionto issue re-trip commands to the failed breaker, or to tripadjacent breakers using the relay’s contact output logicor communications-based tripping schemes.
Inadvertent Energization Detection Occasionally, the unit breaker for an out-of-servicegenerator is closed inadvertently. The SEL-700G detectsthis condition using voltage, current, and other supervi-sory conditions you select through an SELOGIC controlequation.
Frequency Protection (81) Six levels of over- or underfrequency elements detectabnormal frequency operating conditions. Use the inde-pendently time-delayed output of these elements to tripor alarm. Phase undervoltage supervision prevents unde-sired frequency element operation during start-up, shut-down, and faults, and while the field is de-energized.SEL-700G frequency elements have high accuracy (lessthan 0.01 Hz).
Rate-of-Change-of-Frequency Protection (81R) Four independent rate-of-change-of-frequency elementsare provided with individual time delays for use whenfrequency changes occur, for example, when there is asudden imbalance between generation and load. Theycall for control action or switching action such asnetwork decoupling or load shedding. Each elementincludes logic to detect either increasing or decreasingfrequency and above or below nominal frequency.
Vector Shift Protection (78VS)When distributed generators (DG) are connected in theutility network, the vector shift element (78VS) is used todetect islanding conditions and trip the DG. Failure totrip islanded generators can lead to problems such aspersonnel safety, out-of-synchronization reclosing, anddegradation of power quality. Based on the change in the
angle of the voltage waveform, the islanding conditioncan be detected by the vector shift function. Use thevector shift element with the 81RF element as a backupfor fast and secure islanding detection. The vector shiftelement operates within three cycles, which is fastenough to prevent reclosing out-of-synchronism with thenetwork feeders to avoid generator damage.
Off-Frequency Accumulators The SEL-700G tracks the total time-of-operation in up tosix off-nominal frequency bands. If the off-nominal timeof operation exceeds one of the independent time setpoints, the relay can trip or alarm.
Thermal Overload Protection (49T)The SEL-700G thermal element provides generator over-load protection based on the thermal model described inIEC standard 60255-8. The model can be biased byambient temperature if the RTD option is used.
The relay operates a thermal model with a trip valuedefined by the relay settings and a present heat estimatethat varies with time and changing generator current.
RTD Thermal Protection When the SEL-700G is equipped with either an optional10 RTD input expansion card or an external SEL-2600RTD Module with up to 12 RTD inputs, as many as12 thermal elements in the relay can be programmed fortwo levels of thermal protection per element. Each RTDinput provides an alarm and trip thermal pickup setting indegrees C, provides open and shorted RTD detection,and is compatible with the following three-wire RTDtypes:
➤ PT100 (100 Ω platinum)
➤ NI100 (100 Ω nickel)
➤ NI120 (120 Ω nickel)
➤ CU10 (10 Ω copper)
Additionally, the winding RTDs and the ambienttemperature RTD can be configured and used to bias thegenerator thermal model and thermal protection.
Schweitzer Engineering Laboratories, Inc. SEL-700G Data Sheet
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Operator ControlsOperator controls eliminate traditional panel controlswitches. Eight conveniently sized operator controls arelocated on the relay front panel (see Figure 5). The SERcan be set to track operator controls. Change operatorcontrol functions using SELOGIC control equations.
Figure 5 Operator Controls (Shown for the SEL-700G0, SEL-700G1 Models)
The following operator control descriptions are forfactory-set logic for the model shown.
LOCK: The LOCK operator control blocks selectedfunctions. Press it for at least three seconds to engage or
disengage the lock function. While locked in position,the following operator controls cannot change state ifpressed: TRIP and CLOSE.
AUX: The AUX operator control and LEDs are userprogrammable.
CLOSE and TRIP: Use the CLOSE and TRIP operator controlsto close and open the connected circuit breaker. They canbe programmed with intentional time delays to supportoperational requirements for breaker-mounted relays.This allows the operator to press the CLOSE or TRIPpushbutton, then move to an alternate location before thebreaker command is executed.
In the SEL-700G with the touchscreen display, you canalso use the front-panel operator control pushbuttons tojump to a specific screen while also using them forLOCK/CLOSE/TRIP operations, etc. You can programthe selectable operator pushbutton screen settings underthe Touchscreen settings category in QuickSet and mapthe button to a specific screen.
Built-In Web ServerEvery Ethernet-equipped SEL-700G includes a built-inweb server. Use any standard web browser to interfacewith the relay and perform the following actions:
➤ Log in with password protection.
➤ Safely read the relay settings.
➤ Verify the relay self-test status and view the relayconfiguration.
➤ Inspect meter reports.
➤ Download SER and event reports.
➤ Upload new firmware (firmware upgrade).
Figure 6 shows the fundamental metering screen that canbe accessed by clicking Meter > Fundamental. Use theMeter menu to view all the available relay metering sta-tistics.
Figure 6 Fundamental Meter Report Webpage
Figure 7 shows the Group 1 settings webpage. You canview the settings of each relay settings class by selectingSettings and the respective relay settings class.
NOTE: All text can be changed with the configurable labels kit.
LOCK
AUX 1
CLOSE
TRIP
BLOCK CLOSE
GEN BRKR CLOSED
DISABLED
ENABLED
GEN BRKR OPEN
AUX 2
AUX 3
AUX 4
AUX 5
SEL-700G Data Sheet Schweitzer Engineering Laboratories, Inc.
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Figure 7 Group 1 Settings Webpage
You can upgrade the relay firmware through the relayweb server by clicking System > File Management andselecting the firmware upgrade file. Figure 8 shows thefirmware upgrade webpage.
Figure 8 Upgrade the Relay Firmware From the File Management Webpage
Relay and Logic Settings SoftwareQuickSet Software simplifies settings and provides anal-ysis support for the SEL-700G. With QuickSet you haveseveral ways to create and manage relay settings:
➤ Develop settings off-line with an intelligent settingseditor that only allows valid settings.
➤ Create SELOGIC control equations with a drag-and-drop text editor.
➤ Configure proper settings using online help.
➤ Organize settings with the relay database manager
➤ Load and retrieve settings using a simple PC commu-nications link.
With QuickSet you can verify settings and analyze events;and analyze power system events with the integratedwaveform and harmonic analysis tools.
The following features of QuickSet can monitor,commission, and test the SEL-700G:
➤ The PC interface remotely retrieves power systemdata.
➤ The HMI monitors meter data, Relay Word bits, andoutput contacts status during testing. The control windowallows resetting of metering quantities, and other controlfunctions.
➤ The synchroscope screen provides a visual display ofthe autosynchronizer function.
➤ Bay control allows you to design new bay screens andedit existing bay screens by launching ACSELERATOR
Bay Screen Builder SEL-5036 Software for theSEL-700G relays with the touchscreen display.
ACSELERATOR Bay Screen Builder SEL-5036 SoftwareThe SEL-700G with the touchscreen display layoutoption provides you with the ability to design bay config-uration screens to meet your system needs. You candisplay the bay configuration as a single-line diagram(SLD) on the touchscreen. You can use ANSI and IECsymbols, along with analog and digital labels, for theSLD to indicate the status and control of the breaker andtwo- or three-position disconnects, bus voltages, andpower flow through the breaker. In addition to SLDs, youcan design the screens to show the status of various relayelements via Relay Word bits or to show analog quanti-ties for commissioning or day-to-day operations. Youcan design these screens with the help of Bay ScreenBuilder in conjunction with QuickSet. Bay ScreenBuilder provides an intuitive and powerful interface todesign bay screens to meet your application needs.
Schweitzer Engineering Laboratories, Inc. SEL-700G Data Sheet
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Figure 9 Bay Screen Builder
SEL-700G Data Sheet Schweitzer Engineering Laboratories, Inc.
16
Metering and Monitoring The SEL-700G, depending on the model selected,provides extensive metering capabilities. See Specifica-tions on page 35 for metering and power measurementaccuracies. As shown in Table 3, metered quantitiesinclude voltages and currents; sequence voltages and
currents; power, frequency, and energy; and maximum/minimum logging of selected quantities. The relayreports all metered quantities in primary quantities(current in A primary and voltage in V primary).
Load ProfileThe SEL-700G features a programmable Load Profile(LDP) recorder that records as many as 17 meteringquantities into nonvolatile memory at fixed timeintervals. The LDP saves several days to several weeks ofthe most recent data depending on the LDP settings(9800 entries total).
Synchronized Phasor Measurement Combine the SEL-700G with an SEL IRIG-B timesource to measure the system angle in real time with atiming accuracy of ±10 µs. Measure instantaneousvoltage and current phase angles in real time to improvesystem operation with synchrophasor information.Replace state measurement, study validation, or track
Table 3 SEL-700G Metered Values
Types of Metering
Instantaneous Differential Max/Min Analog InputsRemote Analogs Math Variables Synchrophasors ThermalDemand and Peak Demand Energy RMS Harmonics
Quantities Description
Currents: IAn, IBn, ICn, IGn, IN Phase currents, calculated residual currents (IG = 3I0 = IA + IB + IC) and neutral current, for n = X and Y
Voltages: VAn, VBn, VCn, VN Wye-connected voltage inputs for n = X and Y
Voltages: VABn, VBCn, VCAn Delta-connected voltage inputs for n = X and Y
Voltage VS Synchronism-check voltage input
Power kWAn, Bn, Cn, 3PnkVARAn, Bn, Cn, 3PnkVAAn, Bn, Cn, 3Pn
Single and three-phase kilowatts, kilovars, and kilovolt-amps for n = X and Y
Energy MWhAn, Bn, Cn, 3Pn MVARhAn, Bn, Cn, 3PnMVAhAn, Bn, Cn, 3Pn
Single and three-phase real, reactive and apparent energy for n = X and Y
Power Factor PFAn, Bn, Cn, 3Pn Single and three-phase power factor for n = X and Y
Sequence I1n, 3I2n, 3I0n, V1n, 3V2n, 3V0n Positive, negative and zero-sequence currents and voltages for n = X and Y
Frequency FREQn, FREQS (Hz) Instantaneous power system frequency for n = X and Y and for synchronism-check voltage input VS
V/Hz Calculated volts/hertz in percent, using highest measured voltage and measured frequency
VPX3, VN3 Phase and neutral third harmonic voltage for stator ground protection
Gen TCU % Generator thermal capacity used (%)
Rf kOhm Field winding insulation resistance to ground (kOhm)
AXx01–AXx04 Analog inputs
MV01–MV32 Math variables
RA001–RA128 Remote analogs
RTDn (n = 1 to 12) RTD temperature measurement (degrees C)
Schweitzer Engineering Laboratories, Inc. SEL-700G Data Sheet
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system stability. Use SEL-5077 SYNCHROWAVE® ServerSoftware or SEL-5078-2 SYNCHROWAVE® Console Soft-ware to view system angle at multiple locations forprecise system analysis and system-state measurement(see Figure 10).
Figure 10 View of System Angle at Multiple Locations
Send synchrophasor data using IEEE C37.118-2005protocol to SEL synchrophasor applications. Theseinclude the SEL-3378 Synchrophasor Vector Processor(SVP), SEL-3530 Real-Time Automation Controller(RTAC), and the SEL-5078-2 SYNCHROWAVE CentralVisualization and Analysis Software suite.
The SEL-3373 Station Phasor Data Concentrator (PDC)and the SEL-5073 SYNCHROWAVE PDC softwarecorrelate data from multiple SEL-700G relays andconcentrate the result into a single output data stream.These products also provide synchrophasor dataarchiving capability. The SEL-3378 SVP enables controlapplications based on synchrophasors. Directly measurethe oscillation modes of your power system and then acton the result. Use wide-area phase angle slip andacceleration measurements to properly control islandingof distributed generation. With the SVP, you cancustomize a synchrophasor control application accordingto the unique requirements of your power system.
The data rate of SEL-700G synchrophasors is selectablewith a range of 1–60 messages per second. Thisflexibility is important for efficient use ofcommunication capacity.
The SEL-700G phasor measurement accuracy meets thehighest IEEE C37.118-2005 Level 1 requirement of1 percent total vector error (TVE). This means you canuse any SEL-700G model in an application thatotherwise would require purchasing a separate dedicatedphasor measurement unit (PMU).
Use the SEL-700G with SEL communicationsprocessors, or the SEL-3530 RTAC, to change nonlinearstate estimation into linear state estimation. If allnecessary lines include synchrophasor measurementsthen state estimation is no longer necessary. The systemstate is directly measured.
Figure 11 Synchrophasor Measurements Turn State Estimation into State Measurement
Generator Operating Statistics MonitoringThe SEL-700G relay, having generator elements, tracksthe performance and utilization of the protectedgenerator by tracking the following generator operatingstatistics.
➤ Total generator running hours
➤ Total generator stopped hours
➤ Generator full load hours
➤ Percent of time running
➤ Accumulated generator I22 • t
➤ Average real and reactive power outputs
➤ Average power factor
Improve Situational AwarenessProvide improved information to system operators.Advanced synchrophasor-based tools produce a real-timeview of system conditions. Use system trends, alarmpoints, and preprogrammed responses to help operatorsprevent a cascading system collapse and maximizesystem stability. Awareness of system trends providesoperators with an understanding of future values basedon measured data.
➤ Increase system loading while maintaining adequatestability margins.
➤ Improve operator response to system contingenciessuch as overload conditions, transmission outages, orgenerator shutdown.
➤ Advance system knowledge with correlated eventreporting and real-time system visualization.
➤ Validate planning studies to improve system loadbalance and station optimization.
San Antonio, TX
60.0 Hz
Chicago, IL
60.015 Hz
Monterrey, Mexico
59.996 Hz 59.996 Hz
Pullman, WA Philadelphia, PA
Tampa, FL
60.003 Hz
60.007 Hz
Pullman
Chicago
Philadelphia
Tampa
San Antonio
Monterrey
�1
�2
V1
V2
V1
V2
P12
Q12StateState
MeasurementsMeasurements
1 Second10 Minutes
= h (V,�) + error = h (V,�)
SEL-700G Data Sheet Schweitzer Engineering Laboratories, Inc.
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Figure 12 Visualization of Phase Angle Measurements Across a Power System
Figure 13 SEL-5078-2 SYNCHROWAVE Console Real-Time, Wide-Area Visualization Tool
Event Reporting and SEREvent reports and the SER simplify post-fault analysisand improve understanding of simple and complexprotective scheme operations. In response to a user-selected trigger, the voltage, current, frequency, andelement status information contained in each event reportconfirms the relay scheme and system performance forevery fault. Decide how much detail is necessary whenyou request an event report (e.g., 1/4-cycle or 1/32-cycleresolution, filtered or raw analog data, respectively).
The relay stores as many as 6 of the most recent180-cycle event reports, 18 of the most recent 64-cycleevent reports, or 74 of the most recent 15-cycle eventreports in nonvolatile memory. The relay always appendsrelay settings at the time of the event to the bottom ofeach event report.
The following analog data formats are available:
➤ 1/4-cycle or 1/32-cycle resolution, filtered or unfil-tered analog, ASCII or Compressed ASCII reports
➤ 1/32-cycle resolution COMTRADE reports
The relay SER feature stores the latest 1024 entries. Usethis feature to gain a broad perspective at a glance. An
SER entry helps to monitor input/output change-of-stateoccurrences and element pickup/dropout.
Synchronized MeasurementsThe IRIG-B time-code input synchronizes the SEL-700Gtime to within ±5 ms of the time-source input.A convenient source for this time code is an SEL-2401Satellite-Synchronized Clock, the SEL-3530 Real TimeAutomation Controller (RTAC), or the SEL-2032,SEL-2030, or SEL-2020 Communications Processor (viaSerial Port 3 on the SEL-700G).
Generator Autosynchronism ReportThe SEL-700G with the autosynchronism functiongenerates a generator autosynchronism report with all therelevant analog and digital signals for a quick analysis ofthe event. The sample rate can be selected between 0.25,1, and 5 cycles. The report captures 4800 time-stampeddata points.
Figure 14 Graphical Display of Generator Synchronizer Report
IEC 61850 Test ModeTest Mode allows you to test an in-service relay withoutaccidentally operating control output contacts. TestMode includes five different modes:
On: In On mode, the relay operates as normal; it reportsIEC 61850 Mode/Behavior status as On and processesall inputs and outputs as normal. If the quality of thesubscribed GOOSE messages satisfies the GOOSEprocessing, the relay processes the received GOOSEmessages as valid.
Blocked: This mode is similar to On mode, except thatthe device does not trip any physical contact output.
Test: In Test mode, the relay processes valid incomingtest signals and normal messages and operates physicalcontact outputs, if the outputs are triggered.
Schweitzer Engineering Laboratories, Inc. SEL-700G Data Sheet
19
Test/Blocked: This is similar to Test mode, except thatthe device does not trip any physical contact outputs.
Off: The device does not process any incoming data orcontrol commands (except commands to change the
mode). All protection logic is disabled and all dataquality is marked as invalid.
Touchscreen DisplayYou can order the SEL-700G Feeder Protection Relaywith an optional touchscreen display (5-inch, color,800 x 480 pixels). The touchscreen display makes relaydata metering, monitoring, and control quick and effi-cient. The touchscreen display option in the SEL-700Gfeatures a straightforward application-driven controlstructure and includes intuitive and graphical screendesigns.
The touchscreen display allows you to:
➤ View and control bay screens
➤ Access metering and monitoring data
➤ Inspect targets
➤ View event history, summary data, and SER informa-tion
➤ View relay status and configuration
➤ Control relay operations
➤ View and edit settings
➤ Enable the rotating display
➤ Program control pushbuttons to jump to a specificscreen
➤ Visualize and synchronize your generator to thesystem with built-in Synchroscope/Auto Synchronizerapplications
You can navigate the touchscreen by selecting thefolders and applications. The folders and applications ofthe Home screen are shown in Figure 15. Folders andapplications are labeled according to functionality.Additional folder and application screens for theSEL-700G touchscreen display option can be seen inFigure 16 through Figure 25.
Figure 15 Home (Default FPHOME Screen)
Bay Screens ApplicationThe SEL-700G with the touchscreen display optionprovides you with the ability to design bay configurationscreens to meet your system needs. The bay configura-tion can be displayed as an SLD on the touchscreen. Youcan create as many as five bay screens with up to twocontrollable breakers, eight controllable two-positiondisconnects, and two controllable three-position discon-nects. ANSI and IEC symbols, along with analog anddigital labels, are available for you to create detailedSLDs of the bay to indicate the status and control of thebreaker and disconnects, bus voltages, and power flowthrough the breaker. Figure 16 shows the default SLD forthe touchscreen display option.
SEL-700G Data Sheet Schweitzer Engineering Laboratories, Inc.
20
Figure 16 Default Bay Screen
Meter Folder ApplicationsThe applications in the Meter folder are part-numberdependent. Only those metering applications specific toyour part number appear in the Meter folder. Select anapplication in the Meter folder to display the report forthat particular application. Select the Phasor applicationto view the current and voltage phasors (see Figure 17).
Figure 17 Meter Phasors
Select the Energy application to view the energymetering quantities (see Figure 18). A reset feature isprovided for the Energy, Max/Min, Thermal, Demand,and Peak Demand applications. Press the Reset button
(see Figure 18) to navigate to the reset confirmationscreen. Once you confirm the reset, the data are reset tozero.
Figure 18 Meter Energy
Reports Folder ApplicationsSelect the Reports folder to navigate to the screen whereyou can access the Events and SER applications. Usethese applications to view events and SERs. To view theevent summary (see Figure 19) of a particular eventrecord, you can select the event record on the EventHistory screen. You can also trigger an event report fromthe Event History screen.
Figure 19 Event Summary
Select the Sequential Events Recorder application toview a history of the SER reports (see Figure 20).
Figure 20 Sequential Events Recorder
Select the Trash button, shown in Figure 19, on theEvent History and Sequential Events Recorder screensand confirm the delete action to remove the records fromthe relay.
Control Folder ApplicationsSelect the Control folder to navigate to the screen whereyou can access the Breaker Control, Disconnect Control,Output Pulsing, Local Bits, Auto Synchronizer, andReset TCU applications. Use the applications to performbreaker control operations, pulse output contacts(Figure 21), control the local bits (Figure 22), and resetTCU for the thermal overload element.
Schweitzer Engineering Laboratories, Inc. SEL-700G Data Sheet
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Figure 21 Digital Output Pulsing-Slot A
Figure 22 Local Bits
Use the Auto Synchronizer application to initiate auto-synchronization of your generator to the system.Throughout the process, you can see the phasordifference between the bus and the generator via theSynchroscope.
Figure 23 Auto Synchronizer
Device Info Folder ApplicationsSelect the Device Info folder to navigate to the screenwhere you can access specific device information appli-cations (Status, Configuration, and Trip & Diag.Messages) and the Reboot application.
Select the Status application to view the relay status,firmware version, part number, etc. (see Figure 24).
Figure 24 Status
To view the trip and diagnostic messages, select the Trip& Diag. Messages application (see Figure 25). When adiagnostic failure, trip, or warning occurs, the relaydisplays the diagnostic message on the screen until it iseither overriden by the restart of the rotating display, orthe inactivity timer expires.
Figure 25 Trip and Diagnostics
SEL-700G Data Sheet Schweitzer Engineering Laboratories, Inc.
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Automation Flexible Control Logic and IntegrationThe SEL-700G can be ordered with as many as fourindependently operated serial ports:
➤ EIA-232 port on the front panel
➤ EIA-232 or EIA-485 port on the Slot B in the rear
➤ EIA-232 fiber-optic port on Slot B card in the rear
➤ EIA-232 or EIA-485 port on the optional communica-tions card in Slot C in the rear
Optionally, the relay supports single or dual, copper orfiber-optic Ethernet ports.
The relay does not require special communicationssoftware. You can use any system that emulates astandard terminal system. Establish communication byconnecting: computers, modems, protocol converters,printers, an SEL Real-Time Automation Controller(RTAC), SEL communications processor, SELcomputing platform, SCADA serial port, and RTUs forlocal or remote communication. Refer to Table 4 for alist of communications protocols available in theSEL-700G.
Table 4 Communications Protocols
Type Description
Simple ASCII Plain language commands for human and simple machine communications. Use for metering, setting, self-test status, event reporting, and other functions.
Compressed ASCII Comma-delimited ASCII data reports. Allows external devices to obtain relay data in an appropriate format for direct import into spreadsheets and database programs. Data are checksum protected.
Extended Fast Meter and Fast Operate
Binary protocol for machine-to-machine communications. Quickly updates SEL communications processors, RTUs, and other substation devices with metering information, relay element, I/O status, time-tags, open and close commands, and summary event reports.Data are checksum protected. Binary and ASCII protocols operate simultaneously over the same communications lines so control operator metering information is not lost while a technician is transferring an event report.Direct communications with the SEL-2600 RTD Module are possible using the unsolicited Fast Meter protocol to read incoming temperature data from the SEL-2600.
Fast SER Protocol Provides SER events to an automated data collection system.
Fast Message Protocol Use this protocol to write remote analog data from other SEL relays or communications processors via unsolicited writes.
DNP3 Serial or Ethernet-based DNP3 protocols.Provides default and mappable DNP3 objects that include access to metering data, protection elements,Relay Word bits, contact I/O, targets, SER, relay summary event reports, and setting group selection.
Modbus Serial- or Ethernet-based Modbus with point remapping. Includes access to metering data, protection elements, contact I/O, targets, SER, relay summary event reports, and setting groups.
IEC 61850 Edition 2 Ethernet-based international standard for interoperability between intelligent devices in a substation. Operates remote bits and I/O. Monitors Relay Word bits and analog quantities.
Synchrophasors IEEE C37.118-compliant synchrophasors for system state, response, and control capabilities.
Event Messenger The use of SEL-3010 Event Messenger allows you to receive alerts directly on your cell phone. Alerts can be triggered through relay events and can include quantities measured by the relay.
DeviceNet Allows for connection to a DeviceNet network for access to metering data, protection elements, contact I/O, targets, and setting groups.
SNTP Ethernet-based protocol that provides time synchronization of the relay.
IEEE 1588-2008 firmware-based PTP
Ethernet-based protocol that provides time synchronization of the relay.
PRP Provides seamless recovery from any single Ethernet network failure in a dual redundant Ethernet network, in accordance with IEC 62439-3.
IEC 60870-5-103 Serial communications protocol–international standard for interoperability between intelligent devices in a substation.
EtherNet/IP Ethernet-based protocol that includes access to metering data, protection elements, targets, and contact I/O.
Schweitzer Engineering Laboratories, Inc. SEL-700G Data Sheet
23
Apply an SEL communications processor as the hub of astar network, with point-to-point fiber or copperconnection between the hub and the SEL-700G(Figure 26).
The communications processor supports externalcommunications links including the public switchedtelephone network for engineering access to dial-outalerts and private line connections of the SCADAsystem.
Figure 26 Example Communications System
SEL manufactures a variety of standard cables forconnecting this and other relays to a variety of externaldevices. Consult your SEL representative for moreinformation on cable availability.SEL-700G controllogic improves integration in the following ways:
➤ Replaces traditional panel control switches. Elimi-nate traditional panel control switches with 32 localbits. Set, clear, or pulse local bits with the front-panelpushbuttons and display. Program the local bits intoyour control scheme with SELOGIC control equations.Use the local bits to perform functions such as a triptest or a breaker trip/close.
➤ Eliminates RTU-to-relay wiring. Eliminate RTU-to-relay wiring with 32 remote bits. Set, clear, or pulseremote bits using serial port commands. Program theremote bits into your control scheme with SELOGIC
control equations. Use remote bits for SCADA-typecontrol operations such as trip, close, and settingsgroup selection.
➤ Replaces traditional latching relays. Replace up to32 traditional latching relays for such functions as“remote control enable” with latch bits. Program latchset and latch reset conditions with SELOGIC controlequations. Set or reset the nonvolatile latch bits usingoptoisolated inputs, remote bits, local bits, or anyprogrammable logic condition. The latch bits retaintheir state when the relay loses power.
➤ Replaces traditional indicating panel lights.Replace traditional indicating panel lights with32 programmable displays. Define custom messages(e.g., Breaker Open, Breaker Closed) to reportpower system or relay conditions on the front-panel
display. Use Advanced SELOGIC control equations tocontrol which messages the relay displays.
➤ Eliminates external timers. Eliminate externaltimers for custom protection or control schemes with32 general purpose SELOGIC control equation timers.Each timer has independent time-delay pickup anddropout settings. Program each timer input with anydesired element (e.g., time qualify a current element).Assign the timer output to trip logic, transfer tripcommunications, or other control scheme logic.
➤ Eliminates settings changes. Selectable settinggroups make the SEL-700G ideal for applicationsrequiring frequent setting changes and for adaptingthe protection to changing system conditions.
The relay stores three setting groups. Select the activesetting group by optoisolated input, command, or otherprogrammable conditions. Use these setting groups tocover a wide range of protection and controlcontingencies.
Switching setting groups switches logic and relayelement settings. Program groups for different operatingconditions, such as station maintenance, seasonaloperations, emergency contingencies, loading, sourcechanges, and downstream relay setting changes.
Fast SER ProtocolSEL Fast SER Protocol provides SER events to an auto-mated data collection system. SEL Fast SER Protocol isavailable on any rear serial port. Devices with embeddedprocessing capability can use these messages to enableand accept unsolicited binary SER messages fromSEL-700G relays.
SEL relays and communications processors have twoseparate data streams that share the same serial port. Thenormal serial interface consists of ASCII charactercommands and reports that are intelligible to peopleusing a terminal or terminal emulation package. Thebinary data streams can interrupt the ASCII data streamto obtain information, and then allow the ASCII datastream to continue. This mechanism allows a singlecommunications channel to be used for ASCIIcommunications (e.g., transmission of a long eventreport) interleaved with short bursts of binary data tosupport fast acquisition of metering or SER data.
Fast Message ProtocolSEL Fast Message Protocol is a method to input ormodify remote analogs in the SEL-700G. These remoteanalogs can then be used in SEL Math or SELOGIC
control equations. Remote analogs can also be modifiedvia Modbus, DNP3, and IEC 61850.
SEL-700G Data Sheet Schweitzer Engineering Laboratories, Inc.
24
Ethernet Network Architectures
Figure 27 Simple Ethernet Network Configuration
Figure 28 Ethernet Network Configuration With Dual Redundant Connections (Failover Mode)
Figure 29 Ethernet Network Configuration With Ring Structure (Switched Mode)
Cat 5 shielded twisted pair (STP) cables with RJ45 connectors
(SEL-C627/C628) for copper Ethernet ports
ORFiber-optic Ethernet cables with
LC connectors (SEL-C808) for fiber-optic Ethernet ports
Set Port 1 (Ethernet) settings in each relay.
NETWORK
NETWORK
Set Port 1 (Ethernet) settings in each relay.
Cat 5 shielded twisted pair (STP) cables with RJ45 connectors (SEL-C627/C628) for copper Ethernet ports
ORFiber-optic Ethernet cables with LC connectors
(SEL-C808) for fiber-optic Ethernet ports
Set Port 1 (Ethernet) settings in each relay.
NETWORK
Cat 5 shielded twisted pair (STP) cables with RJ45 connectors (SEL-C627/C628)
for copper Ethernet portsOR
Fiber-optic Ethernet cables with LC connectors (SEL-C808) for
fiber-optic Ethernet ports
Schweitzer Engineering Laboratories, Inc. SEL-700G Data Sheet
25
Additional FeaturesMIRRORED BITS Relay-to-Relay CommunicationsThe SEL-patented MIRRORED BITS communicationstechnology provides bidirectional relay-to-relay digitalcommunications. MIRRORED BITS can operate inde-pendently on as many as two EIA-232 rear serial portsand one fiber-optic rear serial port on a singleSEL-700G.
This bidirectional digital communication creates eightadditional virtual outputs (transmitted MIRRORED BITS)and eight additional virtual inputs (receivedMIRRORED BITS) for each serial port operating in theMIRRORED BITS mode (see Figure 30). Use theseMIRRORED BITS to transmit/receive information betweenupstream relays and a downstream relay to enhancecoordination and achieve faster tripping for downstreamfaults. MIRRORED BITS technology also helps reducetotal scheme operating time by eliminating the need toassert output contacts to transmit information.
Figure 30 MIRRORED BITS Transmit and Receive Bits
Status and Trip Target LEDsThe SEL-700G includes 24 tricolor status and trip targetLEDs on the front panel. When shipped from the factory,all LEDs are predefined and fixed in settings. You canreprogram these LEDs for specific applications. Thiscombination of targets is explained and shown inFigure 33. Some front-panel relabeling of LEDs may beneeded if you reprogram them for unique or specificapplications—see Configurable Labels.
Event Messenger PointsThe SEL-700G, when used with the SEL-3010 EventMessenger, can allow for ASCII-to-voice translation of as
many as 32 user-defined messages, along with analog datathat have been measured or calculated by the relay. With thiscombination, you can receive voice messages on any phonefor alerts to transition of any Relay Word bits in the relay.
Verbal notification of breaker openings, fuse failures, RTDalarms, etc. can now be sent directly to your cell phonethrough the use of your SEL-700G and SEL-3010 (must beconnected to an analog telephone line). In addition, messagescan include an analog value such as current, voltage, orpower measurements made by the SEL-700G.
Configurable LabelsUse the configurable labels to relabel the operatorcontrols and LEDs (shown in Figure 33) to suit theinstallation requirements. This feature includespreprinted labels (with factory-default text), blank labelmedia, and a Microsoft® Word template on CD-ROM.This allows quick, professional-looking labels for theSEL-700G. Labels may also be customized without theuse of a PC by writing the new label on the blank stockprovided. The ability to customize the control and indica-tion features allows specific utility or industry proce-dures to be implemented without the need for adhesivelabels. All of the figures in this data sheet show thefactory-default labels of the SEL-700G, including thestandard model shown in Figure 33.
Web ServerWeb Server allows you to communicate with the relayvia the Ethernet Port without the need for additionalcommunication software (web browser required). WebServer allows you to access metering and monitoringdata, and also supports firmware upgrades.
Firmware Download Via Ethernet PortsRelay firmware can be securely downloaded to yourrelay via the Ethernet port. The firmware is digitallysigned to prevent malicious modification. Additionally,the Ethernet firmware download allows you to accessand update all your network relays simultaneously.
SEL-700G
Transmit
Receive
Transmit
Receive..
.
.
SEL-351R Relay 20
0
0
1
0
0
.
.
.
.
1
0
0
0
0
0
TMB1
TMB2
TMB8
RMB1
RMB2
RMB8 RMB8
TMB1
TMB2
TMB8
.
.
.
.
.
.
RMB1
RMB2
.
.
SEL-700G Data Sheet Schweitzer Engineering Laboratories, Inc.
26
Relay Dimensions
Figure 31 SEL-700G Dimensions for Rack- and Panel-Mount Models
Hardware Overview
Figure 32 Typical Connection Diagram
5.47 in(139.0 mm)
7.36 in(187.0 mm)
5.80 in(147.4 mm)
1.12 in(28.5 mm)
5.67 in(144.0 mm)
7.56 in(192.0 mm)
RX
TX
+ — + — + — + — + — + — + — + — + — + —
5 4 3 2 1
9 8 7 6
Port
4 D
evic
eNet
(Opt
iona
l)
TX+TX–RX+RX–SHIELD
(Opt
iona
l)
≤ 1000 m
FO Cable
1–12 RTDs
Optional Input / Output Cards
10 RTDs
4 Digital Inputs / 4 Digital Outputs
3 Digital Inputs / 4 Digital Outputs / 1 Analog Output
4 Digital Inputs / 3 Digital Outputs
4 Analog Inputs / 4 Analog Outputs
Front
Port 3
8 Digital Inputs
SEL-700G1 Generator Protection Relay
(Optional 485)
Fiber-Optic Serial Port 2
Optional Ethernet (single or dual) Port 1
Copper Wire
OR
Multimode Fiber
V—CAN_LSHIELDCAN_HV+
OUT101 OUT102 OUT103
A01 A02 A03 A04 A05 A06 A07 A08 A09 A10 A11 A12
IN101 IN102
GND +/H -/N
Port
4A
EIA-
485
8 Digital Outputs
IAX IBX ICX IN
Z07Z06Z05Z04Z03Z02Z01 Z08 Z09 Z10 Z11 Z12VAX VCX
CURRENT INPUTS VOLTAGE INPUTS
SLOT Z: 4 ACI / 3 AVI CARD
IAY IBY ICY
E06E05E04E03E02E01 E07 E08 E11 E12VS VN
CURRENT INPUTS VOLTAGE INPUTS
SLOT E: 3 ACI / 2 AVI CARD
NS NN
5 4 3 2 1
9 8 7 6
IRIG-B Time Source
SEL-2600 Series External
RTD Module (Optional)
IRIG-B
14 Digital Inputs
Schweitzer Engineering Laboratories, Inc. SEL-700G Data Sheet
27
Relay Panel DiagramsSEL-700G1 Generator
Figure 33 Dual-Fiber Ethernet, Fast Hybrid 4 DI/4 DO, 10 RTDs, 3 ACI/2 AVI, 4 ACI/3 AVI (Relay MOT 0700G11ACA9X76850830)
i4485a
LOSS OF FIELD
VOLTS/HERTZ
O/U FREQ
OVERCURRENT
DIFFERENTIAL
TRIP
ENABLED
STATOR/FIELD
LOCK
AUX 1
CLOSE
TRIP
BLOCK CLOSE
GEN BRKR CLOSED
DISABLED
ENABLED
GEN BRKR OPEN
GENERATOR PROTECTION RELAYSEL–700G
E0
2
E0
3
E0
4
E0
5
E0
6
E0
1
E0
8
E0
9
E10
E1
1
E12
E0
7
D3
0
D16
D15
D0
1
i4491a i4488a
(A) Front Panel With Default Configuration Labels
(B) Rear-Panel View (C) Side-Panel View
AUX 2
AUX 3
AUX 4
AUX 5
SEL-700G Data Sheet Schweitzer Engineering Laboratories, Inc.
28
SEL-700GT Intertie
Figure 34 Dual Copper Ethernet, 4 DI/4 DO, 8 DO, 3 ACI/4 AVI, 4 ACI/3 AVI (Relay MOT 0700GT1A2X7585A630)
(A) Front Panel With Default Configuration Labels
(B) Rear-Panel View (C) Side-Panel View
E0
2
E0
3
E0
4
E0
5
E0
6
E0
1
E0
8
E0
9
E10
E1
1
E12
E0
7D
09
D16
D0
1
D0
8
i4492a i4489a
LOCKDISABLED
ENABLED
SEL-700GTINTERTIE PROTECTION RELAY
AUX 4
DIFFERENTIAL
OVERCURRENT
O/U FREQ
VOLTS/HERTZ
LOSS OF FIELD
POWER DRCTNL
ENABLED
TRIP
AUX 3
AUX 2
AUX 1
TIE BRKR
GEN BRKR
SELECT
TIE BRKR CLOSED
GEN BRKR CLOSED
CLOSE
TIE BRKR OPEN
GEN BRKR OPEN
TRIP
Schweitzer Engineering Laboratories, Inc. SEL-700G Data Sheet
29
SEL-700GW Wind Generator
Figure 35 Copper Ethernet, 4 DI/4 DO, 4 AI/4 AO, 3 ACIE, 3 ACIZ (Relay MOT 0700GW1A1A6X77870310)
(A) Front Panel With Default Configuration Labels
(B) Rear-Panel View (C) Side-Panel View
i4487a
GROUND OC- Y
PHASE OC- Y
NEG SEQ OC- X
GROUND OC- X
PHASE OC- X
TRIP
ENABLED
NEG SEQ OC- Y
LOCK
SELECTBRKR Y
BRKR X
CLOSE
TRIP
BRKR Y CLOSED
BRKR X CLOSED
DISABLED
ENABLED
BRKR Y OPEN
BRKR X OPEN
WIND GENERATOR RELAYSEL–700GW
i4493b i4490b
E0
2
E0
3
E0
4
E0
5
E0
6
E0
1
E0
8
E0
9
E10
E1
1
E12
E0
7D
09
D16
D0
1
D0
8
Z0
2IA
X
Z0
3
Z0
4IB
X
Z0
5
Z0
6IC
X
Z0
1
AC
I
AUX 1
AUX 2
AUX 3
AUX 4
SEL-700G Data Sheet Schweitzer Engineering Laboratories, Inc.
30
Applications
SEL-700G1 Generator Relay—Example 1
Figure 36 SEL-700G1 Relay Typical AC Current and Four-Wire Wye Voltage Connection
Figure 37 SEL-700G1 Typical DC External Connections
E01
E04
E03
E06
E05
E02
E12
E11
Z08
Z07
Z06
Z05
Z04
Z03
Z02
Z01
NN
IN ICX
IBX
IAX
IAY
IBY
ICY
Z12 Z11VCX
VAX
VBX
NVN
Slot Z: 4AC1/3 AVI card Slot E: 3AC1/2AV1 card
A
B
C
NS VS
to A, B, or C
87–Input CTsA
B
C
Z10
Z09
52X
E07
E08
Generator
Phase-Input CTs
Neutral Grounding PT
NOTES:
• IN101–102 and OUT 101–103 are in the “base” relay—Slot A Power Supply card.
• Slot C—Select 8DO card, OUT301–OUT308.
• Slot D—Select 3DI/4DO/1AO, IN401–IN403,OUT401–OUT404, or AO401.
• Spares IN403, OUT403–404, AO401, OUT308.
• Use Ethernet Port 1 for Synchrophasors, Modbus, DNP or IEC 61850.
• Use Port 2 for SEL-2600 RTD Module.
• Use Port 3 for SEL-2664 Field Ground Module (with a SEL-2812MR or 2812MT and a C805 fiber-optic cable).
• Settings changes required are not shown.
• Additional I/O and relay logic may be necessary for a specific application.
—DC+DC
A11 A10 BKR X (GEN)52ax
Raise Gen. Speed/Frequency
FRAISEC05 C06OUT303
Abnormal OperationsAnnunciator
ElementAlarms
D03 D04OUT402
A11 A12Field BKR (41)
52a
TRIPXA08 A07OUT103
52ax
BKR X (GEN)Trip Coil
Field BreakerTrip Coil
TRIP1OUT302
52a
C03 C04
GeneratorLockout Relay
TRIP3C01 C02OUT301 86G
52bx
CLOSE XC13 C14OUT307BKR X (GEN)Close Coil
Prime Mover Trip
TRIP2OUT102A05 A06
ALARMA03 A04OUT101Relay AlarmAnnunciator
D11 D12BFIX
BKR X FailureInitiate
IN401
D13 D14 Auto Synch Initiation
IN402
BF TripD01 D02OUT401BFTX
FLOWERLower Gen.
Speed/Frequency
OUT304C07 C08
Raise Gen. Voltage
VRAISEOUT305C09 C10
Lower Gen.Voltage
VLOWEROUT306C11 C12
BF Lockout Relay
86G
86BF
86BF
Schweitzer Engineering Laboratories, Inc. SEL-700G Data Sheet
31
SEL-700G1 Generator Relay—Example 2
Figure 38 SEL-700G1+ Relay AC Connection Example, Multiple High-Impedance Grounded Generators Connected to a Common Bus, With 67N and Other Protection
Generator 3
Phase-Input CTs A
B
C
C
B
A
52
52
Generator 2
E12
E11
Z08
Z07
Z06
Z05
Z04
Z03
Z02
Z01
NN
IN ICX
IBX
IAX
E08
E07
NS
Z12
Z11
Z10
Z09
VCX
VAX
VBX
N
Z Slot: 4AC1/3 AVI cardE Slot: 2AV1 card
VN VS
Core BalanceCT
Open-DeltaPT
Broken Delta
A B C
BUS
SEL-700G Data Sheet Schweitzer Engineering Laboratories, Inc.
32
SEL-700GT Intertie Relay
Figure 39 SEL-700GT Relay Typical AC Current and Four-Wire Wye Voltage Connection
Gene
rato
r
Phas
e-In
put C
Ts
IN
ICX
IBX
IAX
VAX
VCX
VBX
NX
C B
A
Neut
ral G
roun
ding
PT
VS
NS
LOAD
52 X52 Y
A B C
ICY
IBY
IAY
VAY
VCY
VBY
NY
UTILITY
Z Sl
ot: 4
ACI
/3 A
VIE
Slot
: 3 A
CI/4
AVI
Schweitzer Engineering Laboratories, Inc. SEL-700G Data Sheet
33
Figure 40 SEL-700GT Typical DC External Connections
SEL-700GW Wind Generator Relay
Figure 41 SEL-700GW Dual Feeder AC Current Connections
NOTES:• OUTxxx requires an additional I/O
card in Slot C or D.• IN101-102 and OUT 101-103 are in the
“base” relay.• Additional I/O and relay logic may be
necessary for a specific application.• Settings changes are not shown.• RTD Inputs—requires SEL-2600 RTD
Module or RTD input card in Slot D.
Y Breaker Close Coil
—DC+DC
X BreakerTrip Coil
52by
52ay
X BreakerClose Coil
Relay AlarmAnnunciator
TRIP X
TRIP Y
CLOSE X
CLOSE Y
ALARM
A09
A11
A08
A03
A10
A12
A07
A04
BKR Y52ay
BKR X52ax
Y BreakerTrip Coil
A06 A05
OUT101
OUT102
OUTxxx
OUTxxx
OUT103
52ax
52bx
Slot Z: 3 ACIZ Slot E: 3 ACIE
G
e n e r a t o r
Wind
AB
C
AB
C
52
X Side Y Side
52Y
ICX
IBX
IAX
ICY
IBY
IAY
52X
SEL-700G Data Sheet Schweitzer Engineering Laboratories, Inc.
34
Figure 42 SEL-700GW Typical DC External Connections
NOTES:• OUTxxx requires an additional I/O
card in Slot C or D.• IN101-102 and OUT 101-103 are in the
“base” relay.• Additional I/O and relay logic may be
necessary for a specific application.• Settings changes are not shown.• Field ground element (64F) requires
SEL-2664 Field Ground Module.• RTD Inputs—requires SEL-2600 RTD
Module or RTD input card in Slot D.
Y Breaker Close Coil
BKR Y52ay
—DC+DC
X BreakerTrip Coil
52by
52ay
X BreakerClose Coil
Relay AlarmAnnunciator
TRIP X
TRIP Y
CLOSE X
CLOSE Y
ALARM
A09
A11
A08
A03
A10
A12
A07
A04
BKR X52ax
Y BreakerTrip Coil
A06 A05
OUT101
OUT102
OUTxxx
OUTxxx
OUT103
52ax
52bx
Schweitzer Engineering Laboratories, Inc. SEL-700G Data Sheet
35
Specifications
ComplianceDesigned and manufactured under an ISO 9001 certified quality
management system
47 CFR 15B, Class ANote: This equipment has been tested and found to comply with the
limits for a Class A digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense.
UL Listed to U.S. and Canadian safety standards (File E212775, NRGU, NRGU7)
CE Mark
RCM Mark
Hazardous LocationsUL Certified Hazardous Locations to U.S. and Canadian standards
CL I, DIV 2; GP A, B, C, D; T3C, maximum surrounding temperature of 50°C (File E470448)
EU
EN 60079-0:2012 + A11:2013, EN 60079-7:2015, EN 60079-15:2010, EN 60079-11:2012
Ambient air temperature shall not exceed –20°C ≤ Ta ≤ 50°C
Note: Where so marked, ATEX and UL Hazardous Locations Certification tests are applicable to rated supply specifications only and do not apply to the absolute operating ranges, continuous thermal, or short circuit duration specifications.
General
AC Current Input
Phase and Neutral Currents
INOM = 1 A or 5 A secondary depending on the model
Measurement Category: II
INOM = 5 A
Continuous Rating: 3 • INOM @ 85°C4 • INOM @ 55°C
A/D Measurement Limit: 217 A peak (154 A rms) symmetrical
Saturation Current Rating: Linear to 96 A symmetrical
1-Second Thermal: 500 A
Burden (per Phase): <0.1 VA @ 5 A
INOM = 1 A
Continuous Rating: 3 • INOM @ 85°C4 • INOM @ 55°C
A/D Measurement Limit: 43 A peak (31 A rms) symmetrical
Saturation Current Rating: Linear to 19.2 A symmetrical
1-Second Thermal: 100 A
Burden (per Phase): <0.01 VA @ 1 A
AC Voltage InputsVNOM (L-L secondary)
Range:20–250 V (if DELTA_Y := DELTA)20–440 V (if DELTA_Y := WYE)
Rated Continuous Voltage: 300 Vac
10-Second Thermal: 600 Vac
Burden: <0.1 VA
Input Impedance: 2 MΩ single-ended (phase-to-neutral)4 MΩ differential (phase-to-phase)
Power SupplyRelay Start-Up Time: Approximately 5–10 seconds (after
power is applied until the ENABLED LED turns on)
High-Voltage Supply
Rated Supply Voltage: 110–240 Vac, 50/60 Hz110–250 Vdc
Input Voltage Range (Design Range):
85–264 Vac85–275 Vdc
Power Consumption: <50 VA (ac)<25 W (dc)
Interruptions: 50 ms @ 125 Vac/Vdc100 ms @ 250 Vac/Vdc
Low-Voltage Supply
Rated Supply Voltage: 24–48 Vdc
Input Voltage Range (Design Range): 19.2–60 Vdc
Power Consumption: <25 W (dc)
Interruptions: 10 ms @ 24 Vdc50 ms @ 48 Vdc
Fuse Ratings
LV Power Supply Fuse
Rating: 3.15 A
Maximum Rated Voltage: 300 Vdc, 250 Vac
Breaking Capacity: 1500 A at 250 Vac
Type: Time-lag T
HV Power Supply Fuse
Rating: 3.15 A
Maximum Rated Voltage: 300 Vdc, 250 Vac
Breaking Capacity: 1500 A at 250 Vac
Type: Time-lag T
Output ContactsThe relay supports Form A, B, and C outputs.
Dielectric Test Voltage: 2500 Vac
Impulse Withstand Voltage (UIMP): 5000 V
Mechanical Durability: 100,000 no-load operations
Standard Contacts
Pickup/Dropout Time: ≤8 ms (coil energization to contact closure)
DC Output Ratings
Rated Operational Voltage: 250 Vdc
Rated Voltage Range: 19.2–275 Vdc
Rated Insulation Voltage: 300 Vdc
Make: 30 A @ 250 Vdc per IEEE C37.90
Continuous Carry: 6 A @ 70°C4 A @ 85°C
1-Second Thermal: 50 A
Contact Protection: 360 Vdc, 115 J MOV protection across open contacts
Breaking Capacity (10,000 Operations) per IEC 60255-0-20:1974:
24 Vdc 0.75 A L/R = 40 ms48 Vdc 0.50 A L/R = 40 ms125 Vdc 0.30 A L/R = 40 ms250 Vdc 0.20 A L/R = 40 ms
SEL-700G Data Sheet Schweitzer Engineering Laboratories, Inc.
36
Cyclic (2.5 Cycles/Second) per IEC 60255-0-20:1974:
24 Vdc 0.75 A L/R = 40 ms48 Vdc 0.50 A L/R = 40 ms125 Vdc 0.30 A L/R = 40 ms250 Vdc 0.20 A L/R = 40 ms
AC Output Ratings
Maximum Operational Voltage (Ue) Rating: 240 Vac
Insulation Voltage (Ui) Rating (excluding EN 61010-1): 300 Vac
1-Second Thermal: 50 A
Contact Rating Designation: B300
Utilization Category: AC-15
Voltage Protection Across Open Contacts: 270 Vac, 115 J
Fast Hybrid (High-Speed, High-Current Interrupting)
DC Output Ratings
Rated Operational Voltage: 250 Vdc
Rated Voltage Range: 19.2–275 Vdc
Rated Insulation Voltage: 300 Vdc
Make: 30 A @ 250 Vdc per IEEE C37.90
Continuous Carry: 6 A @ 70°C4 A @ 85°C
1-Second Thermal: 50 A
Open State Leakage Current: <500 µA
MOV Protection (Maximum Voltage): 250 Vac/330 Vdc
Pickup Time: <50 μs, resistive load
Dropout Time: ≤8 ms, resistive load
Break Capacity (10,000 Operations) per IEC 60255-0-20:1974:
48 Vdc 10.0 A L/R = 40 ms125 Vdc 10.0 A L/R = 40 ms250 Vdc 10.0 A L/R = 20 ms
Cyclic Capacity (4 Cycles in 1 Second, Followed by 2 Minutes Idle for Thermal Dissipation) per IEC 60255-0-20:1974:
48 Vdc 10.0 A L/R = 40 ms125 Vdc 10.0 A L/R = 40 ms250 Vdc 10.0 A L/R = 20 ms
AC Output Ratings
See AC Output Ratings for Standard Contacts.
B300 (5 A Thermal Current, 300 Vac Max)
Maximum Current Max VA
Voltage 120 Vac 240 Vac —
Make 30 A 15 A 3600
Break 3 A 1.5 A 360
PF < 0.35, 50–60 Hz
AC-15
Operational Voltage (Ue) 120 Vac 240 Vac
Operational Current (Ie) 3 A 1.5 A
Make Current 30 A 15 A
Break Current 3 A 1.5 A
Electromagnetic loads > 72 VA, PF < 0.3, 50–60 Hz
Optoisolated Control Inputs
When Used With DC Control Signals
Pickup/Dropout Time: Depends on the input debounce settings
250 V: ON for 200–312.5 VdcOFF below 150 Vdc
220 V: ON for 176–275 VdcOFF below 132 Vdc
125 V: ON for 100–156.2 VdcOFF below 75 Vdc
110 V: ON for 88–137.5 VdcOFF below 66 Vdc
48 V: ON for 38.4–60 VdcOFF below 28.8 Vdc
24 V: ON for 15–30 VdcOFF for <5 Vdc
When Used With AC Control Signals
Pickup Time: 2 ms
Dropout Time: 16 ms
250 V: ON for 170.6–312.5 VacOFF below 106 Vac
220 V: ON for 150.2–275 VacOFF below 93.3 Vac
125 V: ON for 85–156.2 VacOFF below 53 Vac
110 V: ON for 75.1–137.5 VacOFF below 46.6 Vac
48 V: ON for 32.8–60 VacOFF below 20.3 Vac
24 V: ON for 14–30 VacOFF below 5 Vac
Current Draw at Nominal DC Voltage:
2 mA (at 220–250 V)4 mA (at 48–125 V)10 mA (at 24 V)
Rated Impulse Withstand Voltage (Uimp): 4000 V
Analog Output (Optional)1A0 4A0
Current: 4–20 mA ±20 mA
Voltage: — ±10 V
Load at 1 mA: — 0–15 kΩLoad at 20 mA: 0–300 Ω 0–750 ΩLoad at 10 V: — >2000 ΩRefresh Rate: 100 ms 100 ms
% Error, Full Scale, at 25°C: <±1% <±0.55%
Select From: Analog quantities available in the relay
Analog Input (Optional)Maximum Input Range: ±20 mA
±10 VOperational range set by user
Input Impedance: 200 Ω (current mode)>10 kΩ (voltage mode)
Accuracy at 25°C
With user calibration: 0.050% of full scale (current mode)0.025% of full scale (voltage mode)
Without user calibration: Better than 0.5% of full scale at 25°C
Accuracy Variation With Temperature:
±0.015% per °C of full scale(±20 mA or ±10 V)
Frequency and Phase RotationSystem Frequency: 50, 60 Hz
Phase Rotation: ABC, ACB
Frequency Tracking: 15–70 Hz
Schweitzer Engineering Laboratories, Inc. SEL-700G Data Sheet
37
Time-Code InputFormat: Demodulated IRIG-B
On (1) State: Vih ≥ 2.2 V
Off (0) State: Vil ≤ 0.8 V
Input Impedance: 2 kΩ
Synchronization Accuracy
Internal Clock: ±1 µs
Synchrophasor Reports (e.g., MET PM): ±10 µs
All Other Reports: ±5 ms
SNTP Accuracy: ±2 ms
PTP Accuracy: ±1 ms
Unsynchronized Clock Drift Relay Powered: 2 minutes per year, typically
Communications Ports
Standard EIA-232 (2 Ports)
Location: Front PanelRear Panel
Data Speed: 300–38400 bps
EIA-485 Port (Optional)
Location: Rear Panel
Data Speed: 300–19200 bps
Ethernet Port (Optional)
Single/Dual 10/100BASE-T copper (RJ45 connector)Single/Dual 100BASE-FX (LC connector)
Standard Multimode Fiber-Optic Port
Location: Rear Panel
Data Speed: 300–38400 bps
Fiber-Optic Ports Characteristics
Port 1 (or 1A, 1B) Ethernet
Wavelength: 1300 nm
Optical Connector Type: LC
Fiber Type: Multimode
Link Budget: 16.1 dB
Typical TX Power: –15.7 dBm
RX Min. Sensitivity: –31.8 dBm
Fiber Size: 62.5/125 µm
Approximate Range: ~6.4 km
Data Rate: 100 Mbps
Typical Fiber Attenuation: –2 dB/km
Port 2 Serial
Wavelength: 820 nm
Optical Connector Type: ST
Fiber Type: Multimode
Link Budget: 8 dB
Typical TX Power: –16 dBm
RX Min. Sensitivity: –24 dBm
Fiber Size: 62.5/125 µm
Approximate Range: ~1 km
Data Rate: 5 Mbps
Typical Fiber Attenuation: –4 dB/km
Optional Communications CardsOption 1: EIA-232 or EIA-485 communications
card
Option 2: DeviceNet communications card
Communications ProtocolsSEL, Modbus, DNP, FTP, TCP/IP, Telnet, SNTP, IEEE-1588-2008
firmware-based PTP, IEC 61850 Edition 2, IEC 60870-5-103, PRP, MIRRORED BITS, EVMSG, EtherNet/IP, C37.118 (synchrophasors), and DeviceNet
Operating TemperatureIEC Performance Rating: –40° to +85°C (–40° to +185°F)
(per IEC/EN 60068-2-1 and 60068-2-2)
NOTE: Not applicable to UL applicationsNOTE: The front-panel display is impaired for temperatures below
–20°C and above +70°C
DeviceNet Communications Card Rating: +60°C (140°F) maximum
Optoisolated Control Inputs: As many as 26 inputs are allowed in ambient temperatures of 85°C or less.
As many as 34 inputs are allowed in ambient temperatures of 75°C or less.
As many as 44 inputs are allowed in ambient temperatures of 65°C or less.
Operating EnvironmentInsulation Class: I
Pollution Degree: 2
Overvoltage Category: II
Atmospheric Pressure: 80–110 kPa
Relative Humidity: 5%–95%, noncondensing
Maximum Altitude Without Derating (Consult the Factory for Higher Altitude Derating): 2000 m
Dimensions144.0 mm (5.67 in) x 192.0 mm (7.56 in) x 147.4 mm (5.80 in)
Weight2.7 kg (6.0 lb)
Relay Mounting Screw (#8–32) Tightening TorqueMinimum: 1.4 Nm (12 in-lb)
Maximum: 1.7 Nm (15 in-lb)
Terminal Connections
Terminal Block
Screw Size: #6
Ring Terminal Width: 0.310 inch maximum
Terminal Block Tightening Torque
Minimum: 0.9 Nm (8 in-lb)
Maximum: 1.4 Nm (12 in-lb)
Compression Plug Tightening Torque
Minimum: 0.5 Nm (4.4 in-lb)
Maximum: 1.0 Nm (8.8 in-lb)
Compression Plug Mounting Ear Screw Tightening Torque
Minimum: 0.18 Nm (1.6 in-lb)
Maximum: 0.25 Nm (2.2 in-lb)
Product StandardsElectromagnetic
Compatibility:IEC 60255-26:2013IEC 60255-27:2013UL 508CSA C22.2 No. 14-05
SEL-700G Data Sheet Schweitzer Engineering Laboratories, Inc.
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Type Tests
Environmental TestsEnclosure Protection: IEC 60529:2001 + CRDG:2003
IP65 enclosed in panel (2-line display models)
IP54 enclosed in panel (touchscreen display models)
IP20 for relay backside panelIP50 for terminals enclosed in the dust
protection assembly (protection against solid foreign objects only) (SEL Part #915900170). The 10°C temperature derating applies to the temperature specifications of the relay.
Vibration Resistance: IEC 60255-21-1:1988IEC 60255-27:2013, Section 10.6.2.1
Endurance: Class 2Response: Class 2
Shock Resistance: IEC 60255-21-2:1988IEC 60255-27:2013, Section 10.6.2.2IEC 60255-27:2013, Section 10.6.2.3
Withstand: Class 1Response: Class 2Bump: Class 1
Seismic (Quake Response): IEC 60255-21-3:1993IEC 60255-27:2013, Section 10.6.2.4
Response: Class 2
Cold: IEC 60068-2-1:2007IEC 60255-27:2013, Section 10.6.1.2IEC 60255-27:2013, Section 10.6.1.4
–40°C, 16 hours
Dry Heat: IEC 60068-2-2:2007IEC 60255-27:2013, Section 10.6.1.1IEC 60255-27:2013, Section 10.6.1.3
85°C, 16 hours
Damp Heat, Steady State: IEC 60068-2-78:2001IEC 60255-27:2013, Section 10.6.1.5
40°C, 93% relative humidity, 10 days
Damp Heat, Cyclic: IEC 60068-2-30:2001IEC 60255-27:2013, Section 10.6.1.6
25°–55°C, 6 cycles, 95% relative humidity
Change of Temperature: IEC 60068-2-14:2009IEC 60255-1:2010, Section 6.12.3.5
–40° to 85°C, ramp rate 1°C/min, 5 cycles
Dielectric Strength and Impulse TestsDielectric (HiPot): IEC 60255-27:2013, Section 10.6.4.3
IEEE C37.90-20051.0 kVac on analog outputs, Ethernet
ports2.0 kVac on analog inputs, IRIG2.5 kVac on contact I/O3.6 kVdc on power supply, IN and
VN terminals
Impulse: IEC 60255-27:2013, Section 10.6.4.20.5 J, 5 kV on power supply, contact I/O, ac current, and voltage inputs0.5 J, 530 V on analog outputs
IEEE C37.90:20050.5 J, 5 kV0.5 J, 530 V on analog outputs
RFI and Interference Tests
EMC Immunity
Electrostatic Discharge Immunity:
IEC 61000-4-2:2008IEC 60255-26:2013, Section 7.2.3IEEE C37.90.3:2001
Severity Level 48 kV contact discharge15 kV air discharge
Radiated RF Immunity: IEC 61000-4-3:2010IEC 60255-26:2013, Section 7.2.4
10 V/mIEEE C37.90.2-2004
20 V/m
Fast Transient, Burst Immunitya:
IEC 61000-4-4:2012IEC 60255-26:2013, Section 7.2.5
4 kV @ 5.0 kHz2 kV @ 5.0 kHz for comm. ports
Surge Immunitya: IEC 61000-4-5:2005IEC 60255-26:2013, Section 7.2.7
2 kV line-to-line4 kV line-to-earth
Surge Withstand Capability Immunitya:
IEC 61000-4-18:2010IEC 60255-26:2013, Section 7.2.6
2.5 kV common mode1.0 kV differential mode1.0 kV common mode on comm. ports
IEEE C37.90.1-20122.5 kV oscillatory4.0 kV fast transient
Conducted RF Immunity: IEC 61000-4-6:2008IEC 60255-26:2013, Section 7.2.8
10 Vrms
Magnetic Field Immunity: IEC 61000-4-8:2009IEC 60255-26:2013, Section 7.2.10
Severity Level:1000 A/m for 3 seconds100 A/m for 1 minute; 50/60 Hz
IEC 61000-4-9:2001Severity Level:1000 A/m
IEC 61000-4-10:2001Severity Level:100 A/m (100 kHz and 1 MHz)
Power Supply Immunity: IEC 61000-4-11:2004IEC 61000-4-17:1999IEC 61000-4-29:2000IEC 60255-26:2013, Section 7.2.11IEC 60255-26:2013, Section 7.2.12IEC 60255-26:2013, Section 7.2.13
EMC Emissions
Conducted Emissions: IEC 60255-26:2013 Class AFCC 47 CFR Part 15.107 Class ACAN ICES-001(A) / NMB-001(A)EN 55011:2009 + A1:2010 Class AEN 55022:2010 + AC:2011 Class AEN 55032:2012 + AC:2013 Class ACISPR 11:2009 + A1:2010 Class ACISPR 22:2008 Class ACISPR 32:2015 Class A
Radiated Emissions: IEC 60255-26:2013 Class AFCC 47 CFR Part 15.109 Class ACAN ICES-001(A) / NMB-001(A)EN 55011:2009 + A1:2010 Class AEN 55022:2010 + AC:2011 Class AEN 55032:2012 + AC:2013 Class ACISPR 11:2009 + A1:2010 Class ACISPR 22:2008 Class ACISPR 32:2015 Class A
Processing Specifications and OscillographyAC Voltage and
Current Inputs: 32 samples per power system cycle
Analog Inputs: 4 samples per power system cycle
Frequency Tracking Range: 15–70 Hz
Digital Filtering: One-cycle cosine after low-pass analog filtering. Net filtering (analog plus digital) rejects dc and all harmonics greater than the fundamental.
Schweitzer Engineering Laboratories, Inc. SEL-700G Data Sheet
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Protection and Control Processing:
Processing interval is 4 times per power system cycle (except for math variables and analog quantities, which are processed every 25 ms). The protection elements 40, 51, and 78 are processed twice per cycle. Analog quantities for rms data are determined through use of data averaged over the previous 8 cycles.
OscillographyLength: 15, 64, 180 cycles
Sampling Rate: 32 samples per cycle unfiltered4 samples per cycle filtered
Trigger: Programmable with Boolean expression
Format: ASCII and Compressed ASCIIBinary COMTRADE (32 samples per
cycle unfiltered)
Time-Stamp Resolution: 1 ms
Time-Stamp Accuracy: ±5 ms
Sequential Events RecorderTime-Stamp Resolution: 1 ms
Time-Stamp Accuracy (With Respect to Time Source) for all RWBs except those corresponding to digital inputs (INxxx): ±5 ms
Time-Stamp Accuracy (With Respect to Time Source) for RWBs corresponding to digital inputs (INxxx): 1 ms
Relay Elements
Instantaneous/Definite Time-Overcurrent (50P, 50G, 50N, 50Q)Pickup Setting Range, A secondary
5 A models: 0.50–96.00 A, 0.01 A steps
1 A models: 0.10–19.20 A, 0.01 A steps
Accuracy: ±5% of setting plus ±0.02 • INOM A secondary (steady-state pickup)
Time Delay: 0.00–400.00 seconds, 0.01 seconds steps, ±0.5% plus ±0.25 cycle
0.10–400.00 seconds, 0.01 seconds steps, ±0.5% plus ±0.25 cycle for 50Q
Pickup/Dropout Time: <1.5 cycle
Inverse-Time Overcurrent (51P, 51G, 51N, 51Q)Pickup Setting Range, A secondary
5 A models: 0.50–16.00 A, 0.01 A steps
1 A models: 0.10–3.20 A, 0.01 A steps
Accuracy: ±5% of setting plus ±0.02 • INOM A secondary (steady-state pickup)
Time Dial
US: 0.50–15.00, 0.01 steps
IEC: 0.05–1.00, 0.01 steps
Accuracy: ±1.5 cycles plus ±4% between 2 and 30 multiples of pickup (within rated range of current)
Differential (87)Unrestrained Pickup Range: 1.0–20.0 in per unit of TAP
Restrained Pickup Range: 0.10–1.00 in per unit of TAP
Pickup Accuracy (A secondary)
5 A Model: ±5% plus ±0.10 A
1 A Model: ±5% plus ±0.02 A
TAP Range (A secondary)
5 A Model: 0.5–31.0 A
1 A Model: 0.1–6.2 A
Unrestrained Element
Pickup Time: 0.8/1.0/1.9 cycles (Min/Typ/Max)
Restrained Element (With Harmonic Blocking)
Pickup Time: 1.5/1.6/2.2 cycles (Min/Typ/Max)
Restrained Element (With Harmonic Restraint)
Pickup Time: 2.62/2.72/2.86 cycles (Min/Typ/Max)
HarmonicsPickup Range (% of
fundamental): 5%–100%
Pickup Accuracy (A secondary)
5 A Model: ±5% plus ±0.10 A of harmonic current
1 A Model: ±5% plus ±0.02 A of harmonic current
Time Delay Accuracy: ±0.5% plus ±0.25 cycle
Restricted Earth Fault (REF)Pickup Range (per unit of
INOM of neutral current input, IN): 0.05–3.00 per unit, 0.01 per-unit steps
Pickup Accuracy (A secondary)
5 A Model: ±5% plus ±0.10 A
1 A Model: ±5% plus ±0.02 A
Timing Accuracy
Directional Output Maximum Pickup/Dropout Time: 1.75 cycles
ANSI Extremely Inverse TOC Curve (U4 With 0.5 Time Dial):
±5 cycles plus ±5% between 2 and 30 multiples of pickup (within rated range of current)
Undervoltage (27P, 27PP, 27V1, 27S)Pickup Range: Off, 2.0–300.0 V (2.0–520.0 V for
phase-to-phase wye connected; 2.0–170.0 V positive-sequence, delta connected)
Accuracy: ±5% of setting plus ±2 V
Pickup/Dropout Time: <1.5 cycle
Time Delay: 0.00–120.00 seconds, 0.01 second steps
Accuracy: ±0.5% plus ±0.25 cycle
Overvoltage (59P, 59PP, 59V1, 59S, 59Q, 59G)Pickup Range: Off, 2.0–300.0 V (2.0–520.0 V for
phase-to-phase wye connected; 2.0–170.0 V positive sequence, delta connected)
Pickup Range (59G, 59Q): Off, 2.0–200.0 V
Accuracy: ±5% of setting plus ±2 V
Pickup/Dropout Time: <1.5 cycle
Time Delay: 0.00–120.00 seconds, 0.01 second steps
Accuracy: ±0.5% plus ±0.25 cycle
Inverse-Time Undervoltage (27I)Setting Range: OFF, 2.00–300.00 V (Phase elements,
positive-sequence elements, phase-to-phase elements with delta inputs or synchronism voltage input)
OFF, 2.00–520.00 V (Phase-to-phase elements with wye inputs)
Accuracy: ±1% of setting plus ±0.5 V
Time Dial: 0.00–16.00 s
SEL-700G Data Sheet Schweitzer Engineering Laboratories, Inc.
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Accuracy: ±1.5 cyc plus ±4% between 0.95 and 0.1 multiples of pickup
Inverse-Time Overvoltage (59I)Setting Range: OFF, 2.00–300.00 V (Phase elements,
sequence elements, or phase-to-phase elements with delta inputs, neutral voltage input, or synchronism voltage input)
OFF, 2.00–520.00 V (Phase-to-phase elements with wye inputs)
Accuracy: ±1% of setting plus ±0.5 V
Time Dial: 0.00–16.00 s
Accuracy: ±1.5 cyc plus ±4% between 1.05 and 5.5 multiples of pickup
Volts/Hertz (24)
Definite-Time Element
Pickup Range: 100%–200%
Steady-State Pickup Accuracy: ±1% of set point
Pickup Time: 25 ms @ 60 Hz (Max)
Time-Delay Range: 0.04–400.00 s
Time-Delay Accuracy: ±0.1% plus ±4.2 ms @ 60 Hz
Reset Time Range: 0.00–400.00 s
Inverse-Time Element
Pickup Range: 100%–200%
Steady-State Pickup Accuracy: ±1% of set point
Pickup Time: 25 ms @ 60 Hz (Max)
Curve: 0.5, 1.0, or 2.0
Factor: 0.1–10.0 s
Timing Accuracy: ±4% plus ±25 ms @ 60 Hz, for V/Hz above 1.2 multiple of pickup setting, and for operating times >4 s
Reset Time Range: 0.00–400.00 s
Composite-Time Element
Combination of Definite-Time and Inverse-Time specifications
User-Definable Curve Element
Pickup Range: 100%–200%
Steady-State Pickup Accuracy: ±1% of set point
Pickup Time: 25 ms @ 60 Hz (Max)
Reset Time Range: 0.00–400.00 s
Vector Shift (78VS)Pickup Setting Range: 2.0°–30.0°, 0.1° increment
Accuracy: ±10% of the pickup setting, ±1 degree
Voltage Supervision Threshold: 20.0%–100.0% • VNOM
Pickup Time: <3 cycles
Directional Power (32)
Instantaneous/Definite Time, 3 Phase Elements
Type: +W, –W, +VAR, –VAR
Pickup Settings Range, VA secondary
5 A Model: 1.0–6500.0 VA, 0.1 VA steps
1 A Model: 0.2–1300.0 VA, 0.1 VA steps
Accuracy: ±0.10 A • (L-L voltage secondary) and ±5% of setting at unity power factor for power elements and zero power factor for reactive power element (5 A nominal)
±0.02 A • (L-L voltage secondary) and ±5% of setting at unity power factor for power elements and zero power factor for reactive power element (1 A nominal)
Pickup/Dropout Time: <10 cycles
Time Delay: 0.00–240.00 seconds, 0.01 second steps
Accuracy: ±0.5% plus ±0.25 cycle
Frequency (81)Setting Range: Off, 15.00–70.00 Hz
Accuracy: ±0.01 Hz (V1 > 60 V) Pickup/Dropout Time: <4 cycles
Time Delay: 0.00–400.00 seconds, 0.01 second steps
Accuracy: ±0.5% plus ±0.25 cycle
RTD ProtectionSetting Range: Off, 1°–250°C
Accuracy: ±2°C
RTD Open-Circuit Detection: >250°C
RTD Short-Circuit Detection: <–50°C
RTD Types: PT100, NI100, NI120, CU10
RTD Lead Resistance: 25 ohm max. per lead
Update Rate: <3 s
Noise Immunity on RTD Inputs:
To 1.4 Vac (peak) at 50 Hz or greater frequency
RTD Fault/Alarm/Trip Time Delay: Approx. 12 s
Distance Element (21)Two zones of compensator distance elements with load
encroachment block
Reach Pickup Range: 5 A model: 0.1–100.0 ohms1 A model: 0.5–500.0 ohms
Offset Range: 5 A model: 0.0–10.0 ohms1 A model: 0.0–50.0 ohms
Steady-State Impedance Accuracy:
5 A model: ±5% plus ±0.1 ohm1 A mode: ±5% plus ±0.5 ohm
Pickup Time: 33 ms at 60 Hz (Max)
Definite-Time Delay: 0.00–400.00 s
Accuracy: ±0.1% plus ±0.25 cycle
Minimum Phase Current: 5 A model: 0.5 A1 A model: 0.1 A
Maximum Torque Angle Range: 90°–45°, 1° step
Loss-of-Field Element (40)
Two Mho Zones
Zone 1 Offset: 5 A model: –50.0 to 0.0 ohms1 A model: –250.0 to 0.0 ohms
Zone 2 Offset: 5 A model: –50.0 to 50.0 ohms1 A model: –250.0 to 250.0 ohms
Zone 1 and Zone 2 Diameter: 5 A model: 0.1–100.0 ohms1 A model: 0.5–500.0 ohms
Steady-State Impedance Accuracy:
5 A model: ± 0.1 ohm plus±5% of (offset + diameter)
1 A model: ±0.5 ohm plus±5% of (offset + diameter)
Minimum Pos.-Seq. Signals: 5 A model: 0.25 V (V1), 0.25 A (I1)1 A model: 0.25 V (V1), 0.05 A (I1)
Schweitzer Engineering Laboratories, Inc. SEL-700G Data Sheet
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Directional Element Angle: –20.0° to 0.0°
Pickup Time: 3 cycles (Max)
Zone 1 and Zone 2 Definite-Time Delays: 0.00–400.00 s
Accuracy: ±0.1% plus ±1/2 cycle
Voltage-Restrained Phase Time-Overcurrent Element (51V)Phase Pickup (A secondary): 5 A Model: 2.0–16.0 A
1 A Model: 0.4–3.2 A
Steady-State Pickup Accuracy:
5 A Model: ±5% plus ±0.10 A1 A Model: ±5% plus ±0.02 A
Time Dials: US: 0.50–15.00, 0.01 stepsIEC: 0.05–1.00, 0.01 steps
Accuracy: ±4% plus ±1.5 cycles for current between 2 and 20 multiples of pickup (within rated range of current)
Linear Voltage Restraint Range: 0.125–1.000 per unit of VNOM
Voltage-Controlled Phase Time-Overcurrent Element (51C)Phase Pickup (A secondary): 5 A Model: 0.5–16.0 A
1 A Model: 0.1–3.2 A
Steady State Pickup Accuracy:
5 A Model: ±5% plus ±0.10 A1 A Model: ±5% plus ±0.02 A
Time Dials: US: 0.50–15.00, 0.01 stepsIEC: 0.05–1.00, 0.01 steps
Accuracy: ±4% plus ±1.5 cycles for current between 2 and 20 multiples of pickup (within rated range of current)
100 Percent Stator Ground Protection (64G)Neutral Fundamental
Overvoltage (64G1): OFF, 0.1–150.0 V
Steady-State Pickup Accuracy: ±5% plus ±0.1 V
Pickup Time: 1.5 cycles (Max)
Definite-Time Delay: 0.00–400.00 s
Accuracy: ±0.1% plus ±0.25 cycle
Third-Harmonic Voltage Differential or Third-Harmonic Neutral Undervoltage Pickup 64G2: 0.1–20.0 V
Steady-State Pickup Accuracy: ±5% plus ±0.1 V
Third-Harmonic Voltage Differential Ratio Setting Range: 0.0 to 5.0
Pickup Time: 3 cycles (Max)
Definite-Time Delay: 0.00–400.00 s
Accuracy: ±0.1% plus ±0.25 cycle
Field Ground Protection (64F) (Requires SEL-2664 Field Ground Module)
Field Ground Protection Element: 0.5–200.0 kilohms, 0.1 kilohm step
Pickup Accuracy: ±5% plus ±500 ohms for 48 < VF < 825 Vdc
±5% plus ±20 kilohms for 825 < VF < 1500 Vdc
(VF is the generator field winding excitation dc voltage)
Pickup Time: 2 s if the injection frequency in the SEL-2664 is selected at 1 Hz
8 s if the injection frequency in the SEL-2664 is selected at 0.25 Hz
Definite-Time Delay: 0.0–99.0 s
Maximum Definite-Time Delay Accuracy: ±0.5% plus ±5 ms
Out-of-Step Element (78)Forward Reach: 5 A model: 0.1–100.0 ohms
1 A model: 0.5–500.0 ohms
Reverse Reach: 5 A model: 0.1–100.0 ohms1 A model: 0.5–500.0 ohms
Single Blinder
Right Blinder: 5 A model: 0.1–50.0 ohms1 A model: 0.5–250.0 ohms
Left Blinder: 5 A model: 0.1–50.0 ohms1 A model: 0.5–250.0 ohms
Double Blinder
Outer Resistance Blinder: 5 A model: 0.2–100.0 ohms1 A model: 1.0–500.0 ohms
Inner Resistance Blinder: 5 A model: 0.1–50.0 ohms1 A model: 0.5–250.0 ohms
Steady-State Impedance Accuracy:
5 A model: ±0.1 ohm plus ±5% of diameter
1 A model: ±0.5 ohm plus ±5% of diameter
Pos.-Seq. Current Supervision:
5 A model: 0.25–30.00 A1 A model: 0.05–6.00 A
Pickup Time: 3 cycles (Max)
Definite Time Delay: 0.00–1.00 s, 0.01 s step
Trip Delay Range: 0.00–1.00 s, 0.01 s step
Trip Duration Range: 0.00–5.00 s, 0.01 s step
Definite-Time Timers: ±0.1% plus ±1/2 cycle
Ground Differential Elements (87N)Ground Differential Pickup: 5 A Model:
0.10*CTR/CTRN – 15.00 A
1 A Model: 0.02*CTR/CTRN – 3.00 A
(Ratio CTR/CTRN must be within 1.0–40.0)
Steady-State Pickup Accuracy:
5 A Model: ±5% plus ±0.10 A1 A Model: ±5% plus ±0.02 A
Pickup Time: 1.5 cycles (Max)
Time Delay Range: 0.00–5.00 s
Time Delay Accuracy: ±0.5% plus ±1/4 cycle
Negative-Sequence Overcurrent Elements (46)Definite-Time and Inverse-
Time Neg.-Seq. I2 Pickup:2%–100% of generator rated
secondary current
Generator Rated Secondary Current:
5 A Model: 1.0–10.0 A secondary1 A Model: 0.2–2.0 A secondary
Steady-State Pickup Accuracy:
5 A Model: ±0.025 A plus ±3%1 A Model: ±0.005 A plus ±3%
Pickup Time: 50 ms at 60 Hz (Max)
Definite-Time Delay Setting Range: 0.02–999.90 s
Maximum Definite-Time Delay Accuracy: ±0.1% plus ±4.2 ms at 60 Hz
Inverse-Time Element Time Dial: K = 1 to 100 s
Linear Reset Time: 240 s fixed
Inverse-Time Timing Accuracy:
±4% plus ±50 ms at 60 Hz for | I2 | above 1.05 multiples of pickup
SEL-700G Data Sheet Schweitzer Engineering Laboratories, Inc.
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Rate-of-Change of Frequency (81R)Pickup Setting Range: Off, 0.10–15.00 Hz/s
Accuracy: ±100 mHz/s plus ±3.33% of pickup
Trend Setting: INC, DEC, ABS
Pickup/Dropout Time: 3–30 cycles, depending on pickup setting
Pickup/ Dropout Delay Range:
0.10–60.00/0.00–60.00 s, 01 s increments
Voltage Supervision (Positive Sequence) Pickup Range: Off, 12.5–300.0 V, 0.1 V increments
Synchronism Check (25Y) for Tie BreakerSynchronism-Check Voltage
Source:VAY, VBY, VCY, VABY, VBCY,
VCAY or angle from VAY or VABY
Voltage Window High Setting Range: 0.00–300.00 V
Voltage Window Low Setting Range: 0.00–300.00 V
Steady-State Voltage Accuracy:
±5% plus ±2.0 V (over the range of 12.5–300 V)
Maximum Percentage Voltage Difference: 1.0–15.0%
Maximum Slip Frequency: –0.05 Hz to 0.50 Hz
Steady-State Slip Accuracy: ±0.02 Hz
Close Acceptance Angle 1, 2: 0°–80°
Breaker Close Delay: 0.001–1.000 s
Steady-State Angle Accuracy: ±2°
Synchronism Check (25X) for Generator BreakerSynchronism-Check Voltage
Source:VAX, VBX, VCX, VABX, VBCX,
VCAX or angle from VAX or VABX
Voltage Window High Setting Range: 0.00–300.00 V
Voltage Window Low Setting Range: 0.00–300.00 V
Steady-State Voltage Accuracy:
±5% plus ±2.0 V (over the range of 12.5–300 V)
Maximum Percentage Voltage Difference: 1.0–15.0%
Minimum Slip Frequency: –1.00 Hz to 0.99 Hz
Maximum Slip Frequency: –0.99 Hz to 1.00 Hz
Steady-State Slip Accuracy: ±0.02 Hz
Close Acceptance Angle 1, 2: 0°–80°
Target Close Angle: –15° to 15°
Breaker Close Delay: 0.001–1.000 s
Close Failure Angle: 3°–120°
Steady-State Angle Accuracy: ±2°
Generator Thermal Model (49T)Thermal Overload Trip
Pickup Level:30–250% of full load current
(full load current INOM range: 0.2–2.0 • INOM, where INOM = 1 A or 5 A)
TCU Alarm Pickup Level: 50–99% Thermal Capacity Used
Time-Constant Range (2): 1–1000 minutes
Time Accuracy Pickup/Dropout Time:
±(5% + 25 ms) at multiple-of-pickup≥2, 50/60 Hz (pre-load = 0)
Autosynchronizing
Frequency Matching
Speed (Frequency) Control Outputs:
Raise: Digital output, adjustable pulse duration and interval
Lower: Digital output, adjustable pulse duration and interval
Frequency Synchronism Timer: 5–3600 s, 1 s increments
Frequency Adjustment Rate: 0.01–10.00 Hz/s, 0.01 Hz/s increment
Frequency Pulse Interval: 1–120 s, 1 s increment
Frequency Pulse Minimum: 0.10–60.00 s, 0.01 s increment
Frequency Pulse Maximum: 0.10–60.00 s, 0.01 s increment
Kick Pulse Interval: 1–120 s, 1 s increments
Kick Pulse Minimum: 0.02–2.00 s, 0.01 s increments
Kick Pulse Maximum: 0.02–2.00 s, 0.01 s increments
Voltage Matching
Voltage Control Outputs:
Raise: Digital Output, adjustable pulse duration and interval
Lower: Digital Output, adjustable pulse duration and interval
Voltage Synchronized Timer: 5–3600 s, 1 s increments
Voltage Adjustment Rate (Control System): 0.01–30.00 V/s, 0.01 V/s increment
Voltage Pulse Interval: 1–120 s, 1 s increment
Voltage Control Pulse Minimum: 0.10–60.00 s, 0.01 s increment
Voltage Control Pulse Maximum: 0.10–60.00 s, 0.01 s increment
Timing Accuracy: ±0.5% plus ±1/4 cycle
Metering AccuracyAccuracies are specified at 20°C, nominal frequency, ac currents
within (0.2–20.0) • INOM A secondary, and ac voltages within 50–250 V secondary unless otherwise noted.
Phase Currents: ±1% of reading, ±1° (±2.5° at 0.2–0.5 A for relays with INOM = 1 A)
3-Phase Average Current: ±1% of reading
Differential Quantities: ±5% of reading plus ±0.1 A (5 A nominal), ±0.02 A (1 A nominal)
Current Harmonics: ±5% of reading plus ±0.1 A (5 A nominal), ±0.02 A (1 A nominal)
IG (Residual Current): ±2% of reading, ±2° (±5.0° at 0.2–0.5 A for relays with INOM = 1 A)
IN (Neutral Current): ±1% of reading, ±1° (±2.5° at 0.2–0.5 A for relays with INOM = 1 A)
3I2 Negative-Sequence Current: ±2% of reading
System Frequency: ±0.01 Hz of reading for frequencies within 20–70 Hz (V1 > 60 V)
Line-to-Line Voltages: ±1% of reading, ±1° for voltages within 24–264 V
3-Phase Average Line-to-Line Voltage:
±1% of reading for voltages within 24–264 V
Line-to-Ground Voltages: ±1% of reading, ±1° for voltages within 24–264 V
3-Phase Average Line-to-Ground Voltages:
±1% of reading for voltages within 24–264 V
Voltage Harmonics: ±5% of reading plus ±0.5 V
3V2 Negative-Sequence Voltage:
±2% of reading for voltages within 24–264 V
Real 3-Phase Power (kW): ±3% of reading for 0.10 < pf < 1.00
Schweitzer Engineering Laboratories, Inc. SEL-700G Data Sheet
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Reactive 3-Phase Power (kVAR): ±3% of reading for 0.00 < pf < 0.90
Apparent 3-Phase Power (kVA): ±3% of reading
Power Factor: ±2% of reading
RTD Temperatures: ±2°C
Synchrophasor Accuracy
Maximum Message RateNominal 60 Hz System: 60 messages per second
Nominal 50 Hz System: 50 messages per second
Accuracy for VoltagesLevel 1 compliant as specified in IEEE C37.118 under the following
conditions for the specified range.
Conditions
➤ At maximum message rate
➤ When phasor has the same frequency as the positive-sequence tracking quantity (see Table K.10)
➤ Frequency-based phasor compensation is enabled (PHCOMP := Y)
➤ The narrow bandwidth filter is selected (PMAPP := N)
Range
Frequency: ±5.0 Hz of nominal (50 or 60 Hz)
Magnitude: 30 V–250 V
Phase Angle: –179.99° to 180°
Out-of-Band Interfering Frequency (Fs): 10 Hz ≤ Fs ≤ (2 • FNOM)
Accuracy for CurrentsLevel 1 compliant as specified in IEEE C37.118 under the following
conditions for the specified range.
Conditions
➤ At maximum message rate
➤ When phasor has the same frequency as the positive-sequence tracking quantity (see Table K.10)
➤ Frequency-based phasor compensation is enabled (PHCOMP := Y)
➤ The narrow bandwidth filter is selected (PMAPP := N)
Range
Frequency: ±5.0 Hz of nominal (50 or 60 Hz)
Magnitude: (0.4–2) • INOM (INOM = 1 A or 5 A)
Phase Angle: –179.99° to 180°
Out-of-Band Interfering Frequency (Fs): 10 Hz ≤ Fs ≤ (2 • FNOM)
a Front port serial cable (non-fiber) lengths assumed to be <3 m.
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SEL-700G Data Sheet Date Code 20210723
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